200 + Interview Questions in Ratio and Proportion in Quantitative Aptitude Page 2 InterviewSolution

51.	The fourth proportional to 12, 14 and 18 is?
Answer» 21 (14*18)/12 = 21

51.

The fourth proportional to 12, 14 and 18 is?

Answer»

21

(14*18)/12 = 21

Discussion

52.	A, B and C have to distribute Rs 1200 among them selves. ' A and 'C together have Rs 700 and ' B ' and 'C have Rs 800. How much amount does 'C have ?
Answer» Rs. 300 A + B + C = 1200 Therefore, A + B + 2C = 700 + 800 = 1500 Therefore, 1200 - C + 2C = 1500 Therefore, C = 1500 - 1200 = 300

52.

A, B and C have to distribute Rs 1200 among them selves. ' A and 'C together have Rs 700 and ' B ' and 'C have Rs 800. How much amount does 'C have ?

Answer»

Rs. 300

A + B + C = 1200
Therefore, A + B + 2C = 700 + 800 = 1500
Therefore, 1200 - C + 2C = 1500
Therefore, C = 1500 - 1200 = 300

Discussion

53.	Two men Amar and Bhavan have the ratio of their monthly incomes as 6:5. The ratio of their monthly expenditures is 3:2. If Bhavan saves one-fourth of his income, find the ratio of their monthly saving
Answer» 3:10 Let the monthly incomes of Amar and BHAVAN be 6x and 5x respectively. Let the monthly expenditures of Amar and Bhavan be 3y and 2y respectively. Savings of Bhavan every MONTH = 1/4 (5x) =(his income) - (his EXPENDITURE) = 5x - 2y => 5x = 20X - 8Y => y = 15x/8 Ratio of savings of Amar and Bhavan = 6x - 3y : 1/4 (5x) = 6x - 3(15x/8) : 5x/4 = 3x/8 : 5x/4 => 3:10

53.

Two men Amar and Bhavan have the ratio of their monthly incomes as 6:5. The ratio of their monthly expenditures is 3:2. If Bhavan saves one-fourth of his income, find the ratio of their monthly saving

Answer»

3:10

Let the monthly incomes of Amar and BHAVAN be 6x and 5x respectively.
Let the monthly expenditures of Amar and Bhavan be 3y and 2y respectively.
Savings of Bhavan every MONTH = 1/4 (5x)
=(his income) - (his EXPENDITURE) = 5x - 2y
=> 5x = 20X - 8Y => y = 15x/8
Ratio of savings of Amar and Bhavan
= 6x - 3y : 1/4 (5x) = 6x - 3(15x/8) : 5x/4
= 3x/8 : 5x/4 => 3:10

Discussion

54.	The ratio of two numbers is 2:3 and the sum of their cubes is 945. The difference of number is?
Answer» 3 2x

54.

The ratio of two numbers is 2:3 and the sum of their cubes is 945. The difference of number is?

Answer»

3

2x

Discussion

55.	If the ratio of the present age of 'A to that of 'B' is 5 :6 and six years earlier the ratio of their ages was 4:5, what is the present age of 'B' ?
Answer» 36 years A/B = 5/6

55.

If the ratio of the present age of 'A to that of 'B' is 5 :6 and six years earlier the ratio of their ages was 4:5, what is the present age of 'B' ?

Answer»

36 years

A/B = 5/6

Discussion

56.	A certain sum of money is divided among A, B and C so that for each Rs. A has, B has 65 paisa and C 40 paisa. If C's share is Rs.40, find the sum of money?
Answer» Rs.205 A:B:C = 100:65:40

56.

A certain sum of money is divided among A, B and C so that for each Rs. A has, B has 65 paisa and C 40 paisa. If C's share is Rs.40, find the sum of money?

Answer»

Rs.205

A:B:C = 100:65:40

Discussion

57.	Rs.4800/- are divided among P,Q and R in such a way that the share of P is 5/11 of the combined share of Q and R. The share of Q is 3/13 of the combined share of R and P. Thus, R gets:?
Answer» Rs.2400/- NA

57.

Rs.4800/- are divided among P,Q and R in such a way that the share of P is 5/11 of the combined share of Q and R. The share of Q is 3/13 of the combined share of R and P. Thus, R gets:?

Answer»

Rs.2400/-

NA

Discussion

58.	In a mixture 60 litres, the ratio of milk and water 2 : 1. If the this ratio is to be 1 : 2, then the quanity of water to be further added is
Answer» 20 liters NA

58.

In a mixture 60 litres, the ratio of milk and water 2 : 1. If the this ratio is to be 1 : 2, then the quanity of water to be further added is

Answer»

20 liters

NA

Discussion

59.	If a : b = 3 : 4, b : c = 7 : 9, c : d = 5 : 7, find a : d?
Answer» 5 : 12 a/d = (3/4)(7/9)(5/7) => 5/12

59.

If a : b = 3 : 4, b : c = 7 : 9, c : d = 5 : 7, find a : d?

Answer»

5 : 12

a/d = (3/4)*(7/9)*(5/7) => 5/12

Discussion

60.	Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?
Answer» 2:3:4 Originally, let the number of seats for MATHEMATICS, Physics and Biology be 5x, 7x and 8x respectively. Number of increased SEARS are (140% of 5x), (150% of 7x) and (175% of 8x) i.e., (140/100 * 5x), (150/100 * 7x) and (175/100 * 8x) i.e., 7x, 21x/2 and 14x Required RATIO = 7x:21x/2:14x = 14x : 21x : 28x = 2:3:4

60.

Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?

Answer»

2:3:4

Originally, let the number of seats for MATHEMATICS, Physics and Biology be 5x, 7x and 8x respectively. Number of increased SEARS are (140% of 5x), (150% of 7x) and (175% of 8x)

i.e., (140/100 * 5x), (150/100 * 7x) and (175/100 * 8x)

i.e., 7x, 21x/2 and 14x

Required RATIO = 7x:21x/2:14x

= 14x : 21x : 28x = 2:3:4

Discussion

61.	In a class there are 20 boys and 15 girls. The ratio of boys to girls is:
Answer» 4 : 3 4 : 3

61.

In a class there are 20 boys and 15 girls. The ratio of boys to girls is:

Answer»

4 : 3

Discussion

62.	Three number are in the ratio 5:6:7. The sum of its largest and smallest numbers equals the sum of the third number and 48. Find the third number?
Answer» 54 Let the NUMBERS be 5X, 6X and 7x. Largest NUMBER = 7x Smallest number = 5x Third number = 6x 7x + 5x = 6x + 48 6x = 48 Third number is: 48.

62.

Three number are in the ratio 5:6:7. The sum of its largest and smallest numbers equals the sum of the third number and 48. Find the third number?

Answer»

54

Let the NUMBERS be 5X, 6X and 7x.
Largest NUMBER = 7x
Smallest number = 5x
Third number = 6x
7x + 5x = 6x + 48
6x = 48
Third number is: 48.

Discussion

63.	A profit of Rs. 18,000 is to be distributed among A,B and C in the proportions of 5 : 2 : 3 respectively. What is the difference between A's and B's share?
Answer» RS. 5400 Rs. 5400

63.

A profit of Rs. 18,000 is to be distributed among A,B and C in the proportions of 5 : 2 : 3 respectively. What is the difference between A's and B's share?

Answer»

RS. 5400

Rs. 5400

Discussion

64.	The compound ratio of 2/3, 6/7, 1/3 and 1/8 is given by?
Answer» 1/42 2/3 * 6/7 * 1/3 * 1/8 = 1/42

64.

The compound ratio of 2/3, 6/7, 1/3 and 1/8 is given by?

Answer»

1/42

2/3 * 6/7 * 1/3 * 1/8 = 1/42

Discussion

65.	Find the third proportional to 9 and 12?
Answer» 16 NA

65.

Find the third proportional to 9 and 12?

Answer»

16

NA

Discussion

66.	A sum has to be distributed among P, Q and R in the ratio 3 : 5 : 6. If the combined share of P and Q be Rs. 12,400 what is R’s share ?
Answer» RS. 9,300 Rs. 9,300

66.

A sum has to be distributed among P, Q and R in the ratio 3 : 5 : 6. If the combined share of P and Q be Rs. 12,400 what is R’s share ?

Answer»

RS. 9,300

Rs. 9,300

Discussion

67.	The weights of three boys are in the ratio 4:5:6. If the sum of the weights of the heaviest and the lightest boy is 45 kg more than the weight of the third boy, what is the weight of the lightest boy?
Answer» 36 kg Let the WEIGHTS of the three boys be 4k, 5k and 6k respectively. 4k + 6k = 5k + 45 => 5k = 45 => k = 9 Therefore the WEIGHT of the lightest boy = 4k = 4 * 9 = 36 kg.

67.

The weights of three boys are in the ratio 4:5:6. If the sum of the weights of the heaviest and the lightest boy is 45 kg more than the weight of the third boy, what is the weight of the lightest boy?

Answer»

36 kg

Let the WEIGHTS of the three boys be 4k, 5k and 6k respectively.
4k + 6k = 5k + 45
=> 5k = 45 => k = 9
Therefore the WEIGHT of the lightest boy = 4k = 4 * 9 = 36 kg.

Discussion

68.	If p, q and r are positive integers and satisfy x = (p + q - r)/r = (p - q + r)/q = (q + r - p)/p, then the value of x is?
Answer» <P> 1 Hence, x = (p + Q - r)/r = (p - q + r)/q = (q + r - p)/p => x = (p + q - r + p - q + r + q + r - p)/(r + q + p) => x = (p + q + r)/(r + q + p) = 1.

68.

If p, q and r are positive integers and satisfy x = (p + q - r)/r = (p - q + r)/q = (q + r - p)/p, then the value of x is?

Answer»

<P> 1

Hence, x = (p + Q - r)/r = (p - q + r)/q = (q + r - p)/p
=> x = (p + q - r + p - q + r + q + r - p)/(r + q + p)
=> x = (p + q + r)/(r + q + p) = 1.

Discussion

69.	64 boys and 40 girls form a group for social work. During their membership drive, the same number of boys and girls joined the group. How many members does the group have now, if the ratio of boys to
Answer» None of these Let US say x BOYS and x girls JOINED the group. (64 + x)/(40 + x) = 4/3 192 + 3x = 160 + 4x => x = 32 Number of members in the group = 64 + x + 40 + x = 104 + 2x = 168.

69.

64 boys and 40 girls form a group for social work. During their membership drive, the same number of boys and girls joined the group. How many members does the group have now, if the ratio of boys to

Answer»

None of these

Let US say x BOYS and x girls JOINED the group.
(64 + x)/(40 + x) = 4/3
192 + 3x = 160 + 4x => x = 32
Number of members in the group = 64 + x + 40 + x
= 104 + 2x = 168.

Discussion

70.	A garrison of 400 men had a provision for 31 days. After 28 days 280 persons re-enforcement leave the garrison. Find the number of days for which the remaining ration will be sufficient?
Answer» 10 days 400 --- 31 400 --- 3 120 --- ? 4003 = 120x => x =10 days

70.

A garrison of 400 men had a provision for 31 days. After 28 days 280 persons re-enforcement leave the garrison. Find the number of days for which the remaining ration will be sufficient?

Answer»

10 days

400 --- 31

400 --- 3

120 --- ?

400*3 = 120*x => x =10 days

Discussion

71.	A bag contains 50p,Rs.1/- and Rs2/- coins in the ratio of 4:2:1 respectively. If the total money in the bag is Rs.60/-. Find the number of 50p coins in that bag?
Answer» 40 coins NA

71.

A bag contains 50p,Rs.1/- and Rs2/- coins in the ratio of 4:2:1 respectively. If the total money in the bag is Rs.60/-. Find the number of 50p coins in that bag?

Answer»

40 coins

NA

Discussion

72.	A bag contains a certain number of 50 paise coins, 20 paise coins and 10 paise coins inthe ratio 2:3:4. If the total value of all the coins in the bag is Rs.400, find the number of coins of each kind?
Answer» 50p coins = 400 20p coins = 600 10p coins = 800 502k + 203k + 104k = 40000 200k = 40000 => k = 200 50p coins = 2k = 2200 = 400 20p coins = 3k = 3200 = 600 10p coins = 4k = 4200 = 800

72.

A bag contains a certain number of 50 paise coins, 20 paise coins and 10 paise coins inthe ratio 2:3:4. If the total value of all the coins in the bag is Rs.400, find the number of coins of each kind?

Answer»

50p coins = 400
20p coins = 600
10p coins = 800

50*2k + 20*3k + 10*4k = 40000
200k = 40000 => k = 200
50p coins = 2k = 2*200 = 400
20p coins = 3k = 3*200 = 600
10p coins = 4k = 4*200 = 800

Discussion

73.	In a mixture of 65 litres; milk and water are in the ratio of 3:2 . What are the quantities of milk and water in the mixture?
Answer» 39, 26 NA

73.

In a mixture of 65 litres; milk and water are in the ratio of 3:2 . What are the quantities of milk and water in the mixture?

Answer»

39, 26

NA

Discussion

74.	Shubha got three-fourth of what Alka had. Alka gave half of what remained with her to Mohini. If Mohini got Rs. 625, how much did Alka have in the begining?
Answer» RS. 5000 Rs. 5000

74.

Shubha got three-fourth of what Alka had. Alka gave half of what remained with her to Mohini. If Mohini got Rs. 625, how much did Alka have in the begining?

Answer»

RS. 5000

Rs. 5000

Discussion

75.	Divide Rs.118000 among three persons A, B and C such that the ratio of the shares of A and B is 3:4 and that of B:C is 5:6?
Answer» A = 30000 B = 40000 C = 48000 Compound ratio of A:B:C A:B = 3:4 B:C = 5:6 ---------- A:B:C = 15:20:24 We can divide Rs.118000 in this ratio. Share of A = 15/59 * 118000 = 30000 Share of B = 20/59 * 118000 = 40000 Share of C = 24/59 * 118000 = 48000

75.

Divide Rs.118000 among three persons A, B and C such that the ratio of the shares of A and B is 3:4 and that of B:C is 5:6?

Answer»

A = 30000 B = 40000 C = 48000

Compound ratio of A:B:C
A:B = 3:4
B:C = 5:6
----------
A:B:C = 15:20:24
We can divide Rs.118000 in this ratio.
Share of A = 15/59 * 118000 = 30000
Share of B = 20/59 * 118000 = 40000
Share of C = 24/59 * 118000 = 48000

Discussion

76.	Ratio of the earnings of A and B is 4:7. If the earnings of A increases by 50% and those of B decreased by 25%, the new ratio of their earnings becomes 8:7. What are A's earnings?
Answer» Data INADEQUATE Let the ORIGINAL EARNINGS of A and B be Rs. 4x and Rs. 7X. New earnings of A = 150% 0f Rs. 4x = (150/100 * 4x) = Rs. 6x New earnings of B = 75% of Rs. 7x = (75/100 * 7x) = Rs. 21x/4 6x:21x/4 = 8:7 This does not GIVE x. So, the given data is inadequate.

76.

Ratio of the earnings of A and B is 4:7. If the earnings of A increases by 50% and those of B decreased by 25%, the new ratio of their earnings becomes 8:7. What are A's earnings?

Answer»

Data INADEQUATE

Let the ORIGINAL EARNINGS of A and B be Rs. 4x and Rs. 7X.

New earnings of A = 150% 0f Rs. 4x = (150/100 * 4x) = Rs. 6x

New earnings of B = 75% of Rs. 7x = (75/100 * 7x) = Rs. 21x/4

6x:21x/4 = 8:7

This does not GIVE x. So, the given data is inadequate.

Discussion

77.	The ratio of two natural numbers is 5:6. If a certain number is added to both the numbers, the ratio becomes 7:8. If the larger number exceeds the smaller number by 10, find the number added?
Answer» 20 Let the TWO NUMBERS be 5x and 6X. Let the number added to both so that their ratio BECOMES 7:8 be k. (5x + k)/(6x + k) = 7/8 42x = 7k => k = 2X. 6x - 5x = 10 => x = 10 k = 2x = 20.

77.

The ratio of two natural numbers is 5:6. If a certain number is added to both the numbers, the ratio becomes 7:8. If the larger number exceeds the smaller number by 10, find the number added?

Answer»

20

Let the TWO NUMBERS be 5x and 6X.
Let the number added to both so that their ratio BECOMES 7:8 be k.
(5x + k)/(6x + k) = 7/8
42x = 7k => k = 2X.
6x - 5x = 10 => x = 10
k = 2x = 20.

Discussion

78.	A ratio equivalent to 3 : 7 is:
Answer» 9 : 21 9 : 21

78.

A ratio equivalent to 3 : 7 is:

Answer»

9 : 21

Discussion

79.	Find the fourth proportion to 2, 3, 6, x ?
Answer» 9 2 : 3 :: 6 : X => 2/3 = 6/x => x = 18/2 => x = 9

79.

Find the fourth proportion to 2, 3, 6, x ?

Answer»

9

2 : 3 :: 6 : X

=> 2/3 = 6/x
=> x = 18/2
=> x = 9

Discussion

80.	If an amount of Rs 365 85 is distributed equally amongst 27 persons, how much amount would each person get ?
Answer» RS. 1355 Amount = 36585/27 = 1355

80.

If an amount of Rs 365 85 is distributed equally amongst 27 persons, how much amount would each person get ?

Answer»

RS. 1355

Amount = 36585/27 = 1355

Discussion

81.	7 : 12 is equivalent to:
Answer» 42 : 72 42 : 72

81.

7 : 12 is equivalent to:

Answer»

42 : 72

Discussion

82.	Two same glasses are respectively 1/4th 1/5th full of milk. They are then filled with water and the contents mixed in a tumbler. The ratio of milk and water in the tumbler is?
Answer» 9:31 1/4 : 3/4 = (1:3)5 = 5:15

82.

Two same glasses are respectively 1/4th 1/5th full of milk. They are then filled with water and the contents mixed in a tumbler. The ratio of milk and water in the tumbler is?

Answer»

9:31

1/4 : 3/4 = (1:3)5 = 5:15

Discussion

83.	In a college, the ratio of the number of boys to girls is 8 : 5. If there are 200 girls, the total number of students in the college is
Answer» 520 NA

83.

In a college, the ratio of the number of boys to girls is 8 : 5. If there are 200 girls, the total number of students in the college is

Answer»

520

NA

Discussion

84.	The ratio of three numbers A, B and C is 6: 8:15 If A, B and C are increased by 300%, 275% and 100% respectively, what will be the new ratio of A, B and C ?
Answer» 4:5:5 Let the numbers be 600, 800 and 1500. Then the new numbers are 24000, 3000 and 3000. ∴ RATIO = 24 : 30 : 30 = 4 : 5 : 5

84.

The ratio of three numbers A, B and C is 6: 8:15 If A, B and C are increased by 300%, 275% and 100% respectively, what will be the new ratio of A, B and C ?

Answer»

4:5:5

Let the numbers be 600, 800 and 1500.
Then the new numbers are 24000, 3000 and 3000.
∴ RATIO = 24 : 30 : 30 = 4 : 5 : 5

Discussion

85.	If A : B : C = 2 : 3 : 4, then find A/B : B/C : C/A ?
Answer» 8 : 9 : 24 8 : 9 : 24

85.

If A : B : C = 2 : 3 : 4, then find A/B : B/C : C/A ?

Answer»

8 : 9 : 24

Discussion

86.	Three numbers are in the ratio 5 : 6 : 7. The sum of its longest and smallest numbers equals the sum of the third number and 48. Find the third number?
Answer» 48 Let the numbers be 5x, 6x, 7x. Largest NUMBER = 7x. Smallest number = 5x. THIRD number = 6x. 7x + 5x = 6x + 48 6x = 48 => third number is 48.

86.

Three numbers are in the ratio 5 : 6 : 7. The sum of its longest and smallest numbers equals the sum of the third number and 48. Find the third number?

Answer»

48

Let the numbers be 5x, 6x, 7x.

Largest NUMBER = 7x.

Smallest number = 5x.

THIRD number = 6x.

7x + 5x = 6x + 48

6x = 48 => third number is 48.

Discussion

87.	The sum of three numbers is 98. If the ratio of the first to the second is 2:3 and that of the second to the third is 5:8, then the second number is
Answer» 30 NA

87.

The sum of three numbers is 98. If the ratio of the first to the second is 2:3 and that of the second to the third is 5:8, then the second number is

Answer»

30

NA

Discussion

88.	The ratio of 1.5 m to 10 cm is:
Answer» 15 : 1 15 : 1

88.

The ratio of 1.5 m to 10 cm is:

Answer»

15 : 1

Discussion

89.	If the ratio of the present age of 'A' and' B' is 5 :4 and the ratio of their age 16 years back was 27 : 20, what is the present age of 'B' ?
Answer» 56 years Let the PRESENT AGE of A be X and B's be y. x/y = 5/4

89.

If the ratio of the present age of 'A' and' B' is 5 :4 and the ratio of their age 16 years back was 27 : 20, what is the present age of 'B' ?

Answer»

56 years

Let the PRESENT AGE of A be X and B's be y.
x/y = 5/4

Discussion

90.	1600 men have provisions for 28 days in the temple. If after 4 days, 400 men leave the temple, how long will the food last now?
Answer» 32 DAYS 1600 ---- 28 days 1600 ---- 24 1200 ---- ? 160024 = 1200x x = 32 days

90.

1600 men have provisions for 28 days in the temple. If after 4 days, 400 men leave the temple, how long will the food last now?

Answer»

32 DAYS

1600 ---- 28 days

1600 ---- 24

1200 ---- ?

1600*24 = 1200*x

x = 32 days

Discussion

91.	'A', ' B ' and 'C contract a work for Rs 1600. Together A and B are supposed to do 5/8 of the work. How much does C get?
Answer» 600 (A + B) did 5/8 work and C did 1 - 5/8 = 3/5 work (A + B)'s SHARE : C's share = 5/8 : 3/8 Therefore, C's share = 1600/8 X 3 = 600

91.

'A', ' B ' and 'C contract a work for Rs 1600. Together A and B are supposed to do 5/8 of the work. How much does C get?

Answer»

600

(A + B) did 5/8 work and C did
1 - 5/8 = 3/5 work
(A + B)'s SHARE : C's share = 5/8 : 3/8
Therefore, C's share = 1600/8 X 3 = 600

Discussion

92.	The ratio of the present ages of Giri and Hari is 5 : 8. 12 years hence, the ratio of their ages will be 11 : 14. Find the difference in their present ages?
Answer» 5 years Let the present ages of GIRI and Hari be 5x and 8X years respectively. (5x + 12) / (8x + 12) = 11/14 70x + 168 = 88x + 132 => x= 2 DIFFERENCE in their ages will be the same at all times. This difference = Difference of their present ages = 8x - 5x = 3x = 6 years.

92.

The ratio of the present ages of Giri and Hari is 5 : 8. 12 years hence, the ratio of their ages will be 11 : 14. Find the difference in their present ages?

Answer»

5 years

Let the present ages of GIRI and Hari be 5x and 8X years respectively.

(5x + 12) / (8x + 12) = 11/14

70x + 168 = 88x + 132 => x= 2

DIFFERENCE in their ages will be the same at all times.

This difference = Difference of their present ages

= 8x - 5x = 3x = 6 years.

Discussion

93.	The ratio 35 : 84 in simplest form is:
Answer» 5 : 12 5 : 12

93.

The ratio 35 : 84 in simplest form is:

Answer»

5 : 12

Discussion

94.	If A:B = 2:3, B:C = 4:5 and C:D = 6:7, then find the value of A:B:C:D
Answer» 16:24:30:35 NA

94.

If A:B = 2:3, B:C = 4:5 and C:D = 6:7, then find the value of A:B:C:D

Answer»

16:24:30:35

NA

Discussion

95.	150 men consume 1050 kg of rice in 30 days. In how many days will 70 men consume 980 kg of rice?
Answer» 60 Rate of consumption of each MAN = 1050/(150 * 30) = 7/30 kg/day Let us say 70 men take X days to consume 150 kg. Quantity consumed by each item in x days = 7x/30 kg. Quantity consumed by 70 men in x days = (7x/30)(70)kg (7x/30)(70) = 980 x = (980 * 30)/490 => x = 60 days

95.

150 men consume 1050 kg of rice in 30 days. In how many days will 70 men consume 980 kg of rice?

Answer»

60

Rate of consumption of each MAN = 1050/(150 * 30) = 7/30 kg/day
Let us say 70 men take X days to consume 150 kg.
Quantity consumed by each item in x days = 7x/30 kg.
Quantity consumed by 70 men in x days = (7x/30)(70)kg
(7x/30)(70) = 980
x = (980 * 30)/490 => x = 60 days

Discussion

96.	The proportion of copper and zinc in the brass is 13 : 7. How much zinc will there be in 100 kg of brass?
Answer» 35 kg 7/20 * 100 = 35

96.

The proportion of copper and zinc in the brass is 13 : 7. How much zinc will there be in 100 kg of brass?

Answer»

35 kg

7/20 * 100 = 35

Discussion

97.	In 4 : 7 : : 16 : 28, 7 and 16 are called
Answer» MIDDLE TERMS middle terms

97.

In 4 : 7 : : 16 : 28, 7 and 16 are called

Answer»

MIDDLE TERMS

middle terms

Discussion

98.	Some ballons are divided between two persons in the ratio of 3:5. If one person gets 20 less ballons than that of the other, find the total number of ballons.
Answer» 80 NA

98.

Some ballons are divided between two persons in the ratio of 3:5. If one person gets 20 less ballons than that of the other, find the total number of ballons.

Answer»

80

NA

Discussion

99.	If an amount of Rs 17952 is divided equally among 37 people, how much approximate amount will each person get ?
Answer» 485 Amount = 17952/37

99.

If an amount of Rs 17952 is divided equally among 37 people, how much approximate amount will each person get ?

Answer»

485

Amount = 17952/37

Discussion

100.	Gina invests Rs. 48,000 to start business. Four months later Shrayon joins her by investing Rs. 62,000 & another two months later Deepika joins them both by investing Rs.80,000. Profit is Rs. 20,661.
Answer» Rs. 6,390 Ratio of the profit of Gina, Shrayon and Deepika= 48000 x 12 : 62000 x 8 : 80000 x 6 = 48 x 12 : 62 x 8 : 80 x 6 = 36 : 31 : 30 Sum of ratio = 36 + 31 + 30 = 97 ∴ Deepika's share= Rs. (30/97 x 20661) = Rs. 6390

100.

Gina invests Rs. 48,000 to start business. Four months later Shrayon joins her by investing Rs. 62,000 & another two months later Deepika joins them both by investing Rs.80,000. Profit is Rs. 20,661.

Answer»

Rs. 6,390

Ratio of the profit of Gina, Shrayon and Deepika= 48000 x 12 : 62000 x 8 : 80000 x 6
= 48 x 12 : 62 x 8 : 80 x 6
= 36 : 31 : 30
Sum of ratio = 36 + 31 + 30 = 97
∴ Deepika's share= Rs. (30/97 x 20661) = Rs. 6390

Discussion

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