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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A completed his office project in 52 days. B is 30% more efficient than A. How many days will B take to complete the same project?1. 402. 253. 654. 13 |
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Answer» Correct Answer - Option 1 : 40 Given: A can complete his office project in 52days B is 30% more efficient than A. Formula Used Work = Time×Efficiency Time is inversely proportional to Efficiency. Calculation Let the days taken by Bto complete the project bex According to the question, The ratio of efficiency of B and A = 130 : 100 The ratio of time taken byBandA= 100: 130 = 10: 13 The time taken by B to complete the project = (52) × (10/13) ⇒ x = (52) × (10/13) ⇒x = 40 ∴ Bwill take 40days to complete the project. |
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| 2. |
A and C together complete a work in 15 days and A, B and C working together take 9 days to complete the work. Find the time taken by B alone to complete the work.1. 22.5 days2. 21.5 days3. 23.5 days4. 20.5 days5. 22 days |
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Answer» Correct Answer - Option 1 : 22.5 days Given: A and C together take15 days and A, B and C together take9 days Formula used: Efficiency = Work/(Time taken) Calculation: Total work = LCM of 9 and 15 = 45 units Efficiency of (A + C) = 45/15 = 3 units/day and efficiency of (A + B + C) = 45/9 = 5 units/day So, efficiency of B = (5 - 3) units\day ⇒ 2 units/day Now, B alone takes = (45 units)/(2 units/day) ⇒ (45/2) days ⇒ 22.5 days ∴B alone takes 22.5 daysto completethe work. |
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| 3. |
While working in an office, 'n' person can do that work in 60 days. If 12 additional people were taken to work, it would take 12 days less to complete the same work. How many people were there in the beginning?1. 362. 483. 204. 32 |
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Answer» Correct Answer - Option 2 : 48 Given: 'n' person can do a work in 60 days. It takes 12 days less to complete the same work if 12 additional people are added to the work. Concept: If “x” men finish the job in “n” days, 1 person will finish the same job in “nx” days. Calculation: Let the number of men initially be “x”. According to the question, “x” men finish the work in 60 days and (x + 12) men finish it in 48 days. Now, “x” men finish the job in 60 days. 1 man will finish the same job in 60x days ----(1) Again “(x + 12)” men finish the job in 48 days. 1 man can finish the same job in 48(x + 12) days ----(2) From equation (1) and (2), 60x = 48(x + 12) ⇒ 60x – 48x = 48 × 12 ⇒ 12x = 48 × 12 ⇒ x = (48 × 12)/12 ⇒ x = 48 ∴ The total number of men in the beginning was 48. |
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| 4. |
If 12 men and 16 boys can do a piece of work in 5 days; 13 men and 24 boys can do it in 4 days, then the ratio of the daily work done by a man to that of a boy is : |
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Answer» 2 : 1 NA |
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| 5. |
A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day? |
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Answer» 15 days A's 2 day's WORK = 1/20 x 2 = 1/10 . |
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| 6. |
A and B together can complete a work in 12 days. A alone can complete it in 20 days. If B does the work only for half a day daily, then in how many days A and B together will complete the work? |
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Answer» 15 DAYS B's 1 day WORK = (1/12 - 1/20) = 1/30 Now, (A + B)'s 1 day work = (1/20 + 1/60) = 1/15 So, A and B together will complete the work in 15 days. |
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| 7. |
6 women can complete a piece of work in 10 days, whereas 10 children alone take 15 days to complete the same piece of work. How many days will 6 women and 10 children together take to complete the pie |
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Answer» 6 NA |
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| 8. |
A can do a piece of work in 14 days which B alone can do in 21 days. They begin together but 3 days before the completion of the work, A leaves off. The total number of days for the work to be complet |
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Answer» 10 1/5 days B’s 1 day’s WORK = 1/21 |
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| 9. |
A man, a woman and a boy can complete a job in 3 days, 4 days and 12 days respectively. How many boys must assist 1 man and 1 woman to complete the job in 1/4th of a day? |
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Answer» 41 1 MAN’s 1 DAY’s WORK = 1/3, ¼ day’s work = 1/3 × ¼ = 1/12 |
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| 10. |
A man can do a piece of work in 5 days, but with the help of his son, he can do it in 3 days. In what time can the son do it alone? |
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Answer» 7 ½ days If A and B together can do a piece of work in X days and A alone can do the same work in y |
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| 11. |
A clerk works for 210 working days in a calendar year at an annual salary Rs. 1,07,310/- Calculate the hourly rate of pay if each working day is of 7 hrs ? |
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Answer» Rs. 73 |
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| 12. |
X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days how long will they work together take to complete the work? |
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Answer» 13 1/3 Work done by x in 8 DAYS= 8/40 = 1/5 |
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| 13. |
A and B together can finish a work in 9 days. A alone can finish the work in 12 days. In how many days will B alone finish the work? |
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Answer» 36 NA |
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| 14. |
If 12 men can do a piece of work in 24 days, then in how many days can 18 men do the same work? |
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Answer» 16 days 1 WORK done = 12 × 24 |
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| 15. |
A contractor decided to build a bridge in 35 days. He employed 60 men in the beginning and 40 more after 17 days and completed the work on time. If he had not employed the additional men, how many day |
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Answer» 13 DAYS
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| 16. |
If 4 men or 6 boys can finish a work in 20 days. How long will 6 men and 11 boys take to finish the same work? |
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Answer» 6 DAYS 4 MEN = 6 BOYS |
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| 17. |
A can do a piece of work in 10 days. He works at it for 4 days and then B finishes it in 9 days. In how many days can A and B together finish the work? |
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Answer»
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| 18. |
A takes three times as long as B and C together to do a job. B takes four times as long as A and C together to do the same work, If all three, working together can complete the job in 24 days, then th |
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Answer» 96 NA |
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| 19. |
Ram, Shyam and Mohan can do a piece of work in 12, 15 and 20 days respectively. How long will they take to finish it together? |
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Answer» 5 DAYS When A, B and C can do a WORK in x, y and z days respectively. Then, the three of them |
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| 20. |
If A can complete a work in 36 days and B can do the same work in 42days. If A after doing 6 days, leaves the work, find in how many days B will do the remaining work ? |
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Answer» 35 DAYS A’s ONE day WORK =1/36 |
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| 21. |
A, B and C can do a work in 6, 8 and 12 days respectively doing the work together and get a payment of Rs.1800. What is B’s share? |
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Answer» Rs.600 WC = 1/6:1/8:1/12 => 4:3:2 |
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| 22. |
In one day woman does two-third of work done by man; & a child does half of work done by a woman. If 15 men can complete a job in 12 days, in how many days will 10 men, 9 women & 6 children together c |
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Answer» 10 days |
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| 23. |
A man, a woman and a boy together complete a piece of work in 3 days. If a man alone can do it in 6 days and a boy alone in 18 days, how long will a woman take to complete the work? |
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Answer» 9 days (Man + Boy + WOMAN)’s 1 DAY’s work = 1/3 |
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| 24. |
50 people can complete a piece of work in 40 days. Ir how many days can 100 people with twice the efficienc; complete the same piece of work ? |
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Answer» 10 DAYS For FIRST group of people |
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| 25. |
A can finish a work in 20 days and B can do the same work in half the time taken by A. then working together, what part of the same work they can finish in a day? |
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Answer» 3/20 NA |
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| 26. |
4 men work 12 hours daily to complete a work in 9 days. If 16 men work 2 hours daily, in how many days will the work be complete? |
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Answer» 13 1/2 days |
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| 27. |
P alone can complete a piece of work in 6 days. Work done by Q alone in one day is equal to one-third of the work done by P alone in one day. In how many days can the work be completed if P and Q work |
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Answer» 4(1/2) Work DONE by P ALONE in one day = 1/6th of the total work done by Q alone in one day = 1/3(of that done by P in one day) = 1/3(1/6 of the total) = 1/18 of the total. Work done by P and Q, WORKING TOGETHER in one day = 1/6 + 1/18= 4/18 = 2/9 of the total They would take 9/2 days = 4 (1/2) days to complete the work working together. |
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| 28. |
Four pipes fill a tank in 15, 20, 30 and 40 hours respectively. The first pipe was opened at 6 am, the second at 8 am, the third at 10 am and the fourth at 12 noon. When will the tank get filled compl |
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Answer» 41/21 hours Pipe A fills 2/15 part in 2 hours. |
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| 29. |
A and B can do a work in 12 days and 36 days respectively. If they work on alternate days beginning with B, in how many days will the work be completed? |
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Answer» NONE of these NA |
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| 30. |
Ram can complete a work in 45 days and Mohan can do the same work in 27 days. If Ram leaves the work after 5 days, then in how many days will Mohan do the remaining work ? |
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Answer» 21 days |
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| 31. |
A man takes four times as long to row up as to row down the river. If the rate of river is 6 kmh"1 what is the rate of the man in still water ? |
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Answer» 10 kmph Let the SPEED of the man in still WATER be V kmh-1 |
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| 32. |
If 7 men and 4 boys can earn Rs. 10275 in 15 days and 8 men and 11 boys can earn Rs. 7280 in 7 days, in what time can 5 men and 9 boys earn Rs. 8820 ? |
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Answer» 12 days Let the daily EARNING of MAN be x and that of BOY be y. |
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| 33. |
12 men take 36 days to do a work while 12 ladies complete 3/fourth of the same work in 36 days. In how long 10 men and 8 ladies together will finish the same work? |
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Answer» NONE of these NA |
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| 34. |
A and B can do a job together in 7 days. A is 13/4 times as efficient as B. The same job can be done by A alone in |
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Answer» (A's 1 DAY's WORK) : (B's 1 day's work) = 7/4 : 1=7 : 4. NA |
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| 35. |
A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work? |
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Answer» 14 Let A worked for X days. x/21 + 4/28 = 1 => x/21 = 6/7=> x = 18 A worked for 18 days. So, A can complete the remaining WORK in 18 - 4 = 14 days. |
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| 36. |
A does 4/5th of a work in 20 days. He then assembles in B and they complete the remaining work in 3 days. To what extent B alone would take to do the entire work? |
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Answer» 75/2 days NA |
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| 37. |
If 12 men or 20 women can do a piece of work in 54 days, then in how many days can 9 men and 12 women together do the work? |
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Answer» 40 Given that 12m = 20W => 3m = 5w 9 MEN + 12 women = 15 women + 12 women = 27 women 20 women can do the work in 54 days. So, 27 women can do it in (20 * 54) /27 = 40 days. |
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| 38. |
4 girls can do a piece of work in 8 days, same work 3 boys can do in 9 days, 7 men in 2 days and 5 women in 4 days. Who among them have the minimum capacity of work? |
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Answer» Girl NA |
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| 39. |
If A, B and C together can finish a piece of work in 4 days. A alone in 12 days and B in 18 days, then C alone can do it in? |
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Answer» C = 1/4 - 1/12 – 1/18 = 1/9 => 9 days |
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| 40. |
A can finish a piece of work in 5 days. B can do it in 10 days. They work together for two days and then A goes away. In how many days will B finish the work? |
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Answer» 4 DAYS
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| 41. |
A can do a work in 24 days and B can do it in 8 days. In how many days A and B can do the work? |
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Answer» A's 1DAY's WORK = 1/24 |
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| 42. |
Two trains start at same time from two stations A and B and proceed towards each other at speeds of 30 kmh-' and 25 kmlr1. When they meet, the difference between the distances is 40 km?What is the dis |
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Answer» 440 km Let them meet after 1 hour |
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| 43. |
A can do a certain work in the same time in which B and C together can do it.If A and B together could do it in 20 days and C alone in 60 days ,then B alone could do it in: |
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Answer» 60 days NA |
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| 44. |
A and B can do a piece of work in 48 days, A and C can do it in 60 days, b and c can do it 72 days. In what time can c alone do it? |
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Answer» 85 days (A+B) 1 day WORK = 1/48 |
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| 45. |
A can do a piece of work in 15 days and B in 20 days. They began the work together but 5 days before the completion of the work, A leaves. The work was completed in? |
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Answer» 11 3/7 days (x – 5)/15 + x/20 = 1 |
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| 46. |
Two pipes can separately fill up a cistern in 2 hours and 3 hours respectively. If both the pipes are open simultaneously, in how many minutes will the cistern be filled ? |
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Answer» 72 min |
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| 47. |
A can complete a piece of work in 12 days and B is 60% more efficient than A. In how many days B will complete the same work? |
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Answer» 7.5 Days NA |
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| 48. |
Sixty men can stitch 200 shirts in 30 days working 8 hours a day. In how many days can 45 men stitch 300 shirts working 6 hours a day? |
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Answer» 80 We have M1 D1 H1 / W1 = M2 D2 H2 / W2 (VARIATION rule) (60 * 30 * 8)/ 200 = (45 * D2 * 6) / 300 D2 = (60 * 30 * 8 * 300) / (200 * 45 * 6)=> D2 = 80. |
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| 49. |
10 women can complete a work in 8 days and 10 children take 12 days to complete the work. How many days will 6 women and 3 children together take to complete the work? |
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Answer» 10 1 women’s 1 DAY’s work = 1/8/10 = 1/80 |
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| 50. |
Ravi and Kumar are working on an assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar takes 5 hours to type 40 pages. How much time will they take, working together on two differ |
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Answer» 8 hours 15 minutes NUMBER of pages typed by RAVI in 1 hour = 32/6 = 16/3 . |
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