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| 63751. |
1A+14=26 |
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Answer» 1 A + 14 = 26 A = 26 - 14A = 8 sorry the above solution is wrong |
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| 63752. |
910.By selling a dress for 322, a shopkeeper gains 15%At whatprice should he sell it to gain 25%?An electrician sold two fans at 960 each. Onone, he gains20% and on the other, he losses 20%How much does he gain or loss in the whóle transaction ? |
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Answer» x + 15x/100 = 322 x = 322*100/115 x = 280 SP = 280 + 280*25/100 = 280+70 = 350 |
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| 63753. |
T =A+xg 51 1 (1A) |
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| 63754. |
(R) HO() The distance between Anoop's village and Alok's village is (5x + 3) km. A bus starts fromAnoop's village to reach Alok's village. If the bus has reached (3r-2) km, how muchdistance it has to cover to reach Alok's village? |
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Answer» Reaming distance=Total distance- covered distance=(5x+3)-(3x-2)=5x+3-3x+2=2x+5 |
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| 63755. |
12,169, 1avdustuiation 1500 km |
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| 63756. |
0 Ipuitwas added.An article was purchased for 1239 including GST of 18%. Find the price of thearticle before GST was added?8.6 Compound Interestliln 'nne vear interest for FD (fixed deposit) |
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| 63757. |
y I us old as his brother. In 6 more years he will be as old as his brother then. WhaSanjay is now othe present age of each boy ?. Sanjay is now as old as his brother.more vear |
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Answer» Let sanjay bro's present age= xSanjaya's age= x/2after 6 years, sanjaya bro's age will be = x+6, Sanjay will be = x/2+6as per questionx/2+6=3/5(x+6)=>x/2+6=3x/5+18/5=>6-3.6=3x/5-x/2=>2.4=x/10=>x=24Sanjay's bro is 24 yrs old and sanjay is 12 yrs old. |
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| 63758. |
EXERCISE 1A3. Expressas a rational number with denominator(i) 20(il) -3011) 35b x c42 |
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| 63759. |
0) The cost of digging a well after every metre of digging, when it costs t 150 forfirst metre and rises by 50 for each subsequent metre |
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Answer» hit like if you find it useful |
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| 63760. |
EXERCISE 1A1, What do you mean by Euclid's division lemma?tandi 7 as remainder. |
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Answer» Euclid’s Division Lemma: According to Euclid’s Division Lemma if we have two positive integers a and b, then there exists unique integersqandrwhich satisfies the conditiona = bq + rwhere 0≤ r ≤ b. The basis of Euclidean division algorithm is Euclid’s division lemma. To calculate the Highest Common Factor (HCF) of two positive integersaandbwe use Euclid’s division algorithm. HCF is the largest number which exactly divides two or more positive integers. By exactly we mean that on dividing both the integersaandbthe remainder is zero. Let us now get into the working of this euclidian algorithm. Consider we have two numbers 78 and 980 and we need to find the HCF of both of these numbers. To do this, we choose the largest integer first, i.e. 980 and then according to Euclid DivisionLemma,a = bq + rwhere 0 ≤r≤b; 980 = 78 × 12 + 44 Now, herea= 980,b= 78,q= 12 andr= 44. Now consider the divisor as 78 and the remainder 44 and apply the Euclid division method again, we get 78 = 44 × 1 + 34 Similarly, consider the divisor as 44 and the remainder 34 and apply the Euclid division method again, we get 44 = 34 × 1 + 10 Following the same procedure again, 34 = 10 × 3 + 4 10=4×2+2 4=2×2+0 As we see that the remainder has become zero therefore proceeding further is not possible and hence the HCF is the divisorbleft in the last step which in this case is 2. We can say that the HCF of 980 and 78 is 2. |
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| 63761. |
In which of the following situations, does the list of numbers involved make an arithmetic(0 The taxi fare after each km when the fare is Rs 15 for the first km and Rs 8 for each(i) The amount of air present in a cylinder when a vacuum pump removesof the(ii) The cost of digging a well after every metre of digging, when it costs Rs 150 for(iv) The amount of money in the account every year, when Rs 10000 is deposited atprogression, and why?additional km.air remaining in the cylinder at a timethe first metre and rises by Rs 50 for each subsequent metrecompound interest at 8 % per annum. |
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| 63762. |
mber of heart beats/minute 65-68 68-771-74 74-777-80 80-83 83-86umber of womenes kept in packing baskets. Thesebution ofIn a retail market, fruit vendors were selling orangbaskets contained varying number of oranges. The following was the distrioranges.Nunboroforanges | 10-14Number of baskets 1525-29 30-3420-2413515-1911525110Find the mean number of oranges kept in cach basket. Which method of finding themean did you chooseie |
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| 63763. |
the givěn IIStUr huiooEXERCISE 5.1a1. In which of the following situations, does the list of numbers involved make an arithmetic0 The taxi fare after each km when the fare is ? 15 for the first km and 8 for each(i) The amount of air present in a cylinder when a vacuum pump removes of the(ii) The cost of digging a well after every metre of digging, when it costs 150 for the(iv) The amount of money in the account every year, when 10000 is deposited atprogression, and why?additional km.air remaining in the cylinder at a time.first metre and rises by 50 for each subsequent metre.4compound interest at 8 % per annum. |
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| 63764. |
6. By selling oranges at the rate of72 per dozen, awoman losses 10% of her investment. Whatwould be the percentage of her gain or loss, ifshe sold them at 600 per hundred? |
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Answer» Please like the solution Let x be the cost price(100%-10%)×x=7290/100x=72x=72×100/90x=4×20x=80 let the percentage be x(100%+x%)×80=600100%+x%=15/2100/100+x/100=15/2x/100=15/2-100/100x/100=750/100-100/100x=/100=650/100x=65% |
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| 63765. |
The population of Hyderabad was 68,09,000 in the year 2011. If it increases at the rate of47% per annum. what will be the population at the end of the year 2015. |
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| 63766. |
monthly repaymentsThe population of Hyderabad was 68,09,000 in the year 2011. If it increases at the rate of47% per annum. What will be the population at the end of the year 2015 |
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| 63767. |
The population of a village increases by 10% every year. Its population at the end of 2015 was 7986. What was its population at the beginning of 2013?(1) 4000 (2) 4500 (3) 5000 (4) 6000 |
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Answer» Let the population of the village at the beginning of 2013 be x•population at the end of 2013= x+(10/100)x= (11/10)x •population at the end of 2014= (11/10)x+(11/100)x= (121/100)x •population at the end of 20157986 = (121/100)x+(121/1000)x7986 = (1210+121/1000)xx = 7986/1.331 x = 6000 hence the population at the beginning of 2013 was 6000 |
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| 63768. |
24. The population of a city was 120000 in the year 2013 . During next year it increased by 6%but due to an epidemic it decreased by 5% in the following year. What was its population inthe year 2015? |
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| 63769. |
4. The population of a city was 120p00 in the year 2013. During next year it increased by 6%but due to an epidemic it decreased by 5% in the following year, what was its population inthe year 2015? |
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Answer» Population in 2015=120000×(106/100)×(95/100) =12×106×95 =120840 The population in 2015 is increased by 840 percentage=100×(840/120000) =0.7% so the population increase by 0.7% |
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| 63770. |
In a AABC, B = 35° and ZC = 55°. Write which of the following is true:W AC = ABP + BC?() ABP = BC? + AC? |
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| 63771. |
In isosceles triangle ABC, sides AB and Acare equal. If point D lies in base BC andpoint E lies on BC produced (BC beingproduced through vertex C), prove that0) AC > AD(ií) AE > AC(iii) AE > AD |
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Answer» from 3 and 3 we get AE > AD |
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| 63772. |
EXERCISE 1A31. Expressas a rational number with denominator |
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Answer» in the form of p/qq is the denominatorhence -3/5 5 is denominator |
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| 63773. |
15. A does of a piece of work in20 days; then he calls B andthey finish the remaining workin 3 days. How long B alone willtake to do whole work ?19.A किसी काम का भाग 20 दिनों में करताहै, फिर B को काम पर बुलाता है। और वेमिलकर शेष काम 3 दिन में खत्म करते है तोB अकेला उस काम को कितने दिनों में करेंगी। |
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Answer» In 2days he can finish 2 days is the correct answer of the given question 2 days is the best answer I think |
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| 63774. |
Q.8 You have three bricks, each measuring 15 cm Ă 10 cmmany piles can you form each with different heights?6 cm. How |
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Answer» Volume of brick=(15×10×6)cm3=900 cm3Volume of wall=(1500×1000×600)cm3=900000000cm3 So,Bricks needed=900000000cm3/900cm3=1000000 bricks see question |
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| 63775. |
By selling an article for Rs.2880, Sohan lost 4%. At what price should he havesold it so as to gain 49676.ВУ selling a houseforRs-45000. a person loses 10%. For what price shouldhe sell it so as to gain 10%?7. |
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| 63776. |
10. By selling 42 oranges, a person loses a sum equal to the selling price of 8 oranges. Find the loss percent. Ans |
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Answer» Let SP of each orange be xSp of 42 oranges = 42xLoss = 8xCP = Sp + Loss = 50x Loss % = Loss ÷ Cp x 100 =8x/50x X 100 = 16% |
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| 63777. |
2/5 of a 15 m pole is inside the ground. Find the percentage of the length of the pole inside the ground. |
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| 63778. |
air remaining in the cylider at m(ii) The cost of digging a well after every metre of digging, when it costs 150 for thevear when 10000 is deposited atfirst metre and rises by50 for each subsequent metre |
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| 63779. |
Talu more expensive than the first?b) By how much was the securiu PIULvear. If the expenses were 5,65,500,4A shop had sales of 9,45,400 in a year. If the expehow much money was saved in the year?election |
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| 63780. |
whcther -the folowing system of equations is consistentsolve them |
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Answer» Question you have submitted is incomplete. Please post a complete question. X+y+z=6,x+2y+3z=14, x+4y+7z=30 *In the first part of the solution, in matrix B, the number is 30. It's not 3.* |
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| 63781. |
dllA farmer takes 10,000 as loan from a bank and pays back 7 28,000to the bank after 10 years. Hinterest did the farmer have to pay to the bank?Dohini taken from |
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Answer» 28000 = 10000(1+ r x 10/100)2.8 = 1 + r/101.8 = r/10r = 18% |
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| 63782. |
28,000 to the bank after 10 years. How muchA farmer takes ? 10,000 as loan from a bank and pays backinterest did the farmer have to pay to the bank? |
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Answer» 28000 = 10000(1+ r x 10/100)2.8 = 1 + r/101.8 = r/10r = 18% the bank gave an interest of Rupes 500 on deposit |
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| 63783. |
The population of Hyderabad was 68,09,000 in the year 2011. Ifit increases at the rate of47% per annum. What will be the population at the end ofthe year 2015. |
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Answer» We can consider the increase in population as a problem of compound interest. Here, P= 6809000 t= 4 year and r= 4.7%pa Population at the end of 2015 = P(1+r/100)⁴ = 6809000(1+0.047)⁴=6809000(1.047)⁴= 6809000*1.2016=81,81,694.4≈8181694 Hence the population at the end of 2015 will be 8181694. |
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| 63784. |
6. Namita travels 20 km 50 mevery day. Out of this10 km 200 m by bus and the rest by auto.Idistance does she travel by auto? |
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| 63785. |
1. Solve the folowing pair of linear equationi)A+y-5 and 2x-3y-4 |
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Answer» Like my answer if you find it useful! |
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| 63786. |
Wite the folowing decs in words.( Aeto) 1a sate |
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Answer» 1. three point zero one2. twelve point three three |
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| 63787. |
2.LetA-B-be sets. Show that the folowing are equivale(a) AcBFI(d) BC AC |
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Answer» thanx can you do a physics question |
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| 63788. |
Roshan alone can build a fence in 20 days. He starts the work and leaves it after 5 days. Rameshmesh did the whole work alone?does the remaining work in 12 days. How long will it take if RaHow long will it take if Roshan and Ramesh work together from the beginning |
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Answer» One day work of roshan 1/20therefore work done by him 1/20*5=1/4remaining work=1-1/4=3/4let ramesh one day work be 1/xtherefore 1/x*12=3/41/x=3/48=1/16ramesh one day work is 1/16ramesh can complete the work in 16 daysnow if they work togather then their one day work=1/20+1/16=4+5/80=9/80implies 80/9 days=8whole8/9 days hit like if you find it useful |
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| 63789. |
e amouet of air present in a cylinder when a vacuum pump removes of theremaining in the cylinder at a time |
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Answer» please post clearly |
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| 63790. |
which of the following situations, does the list of numbers in volved make an arithmetic(i) The taxi fare after each km when the fare is? 15 for the first km and 8 for each(ii) The amount of air present in a cylinder when a vacuum pump removes of the(iii) The cost of digging a well after every metre of digging, when it costs 150 for theiv) The amount of money in the account every year, when ? 10000 is deposited atogression, and why?additional km.4air remaining in the cylinder at a time.first metre and rises by 50 for each subsequent metre.compound interest at 8 % per annum. |
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Answer» osm answer |
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| 63791. |
EXERCISE 5.1n which of the following situations, does the list of numbers involved make an arithmetic,progression, and why?The taxi fare after each km when the fare is ? 15 for the first km and? 8 for eachadditional km.i) The amount of air present in a cylinder when a vacuum pump removes of the(iii) The cost of digging a well after every metre of digging, when it costs 150 for the(iv) The amount of money in the account every year, when 10000 is deposited at4air remaining in the cylinder at a time.first metre and rises by 50 for each subsequent metre.compound interest at 8 % per annum. |
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| 63792. |
100. If a person loses 20% on selling price.then what percentage of loss will bemade on the cost price?(1) 20%(3) %403(2)(4)25%50%3 |
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Answer» Let selling price (sp)=100 Loss=20 Loss=cp — sp Cp = sp +loss = 100+20=120 Loss % on cost price(cp) = (20/120)*100% = 16.66% lossOption-D is right |
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| 63793. |
The total weight of a box of 5 biscuit packets of same size is 8kg 400 grams. What is theweight of each packet? |
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Answer» 8400/5 = 1680g each packet weighs 1Kg 680g |
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| 63794. |
12. If a bank pays an interest of 96 for 3 years on a sum of 800, find the rate of interest. |
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| 63795. |
2000 in a bank which pays6% simple interest. She withdrewsited780 at the end ofthe firstvear. What will be her balance after 3 years? |
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| 63796. |
10. A monkey is trying to climb a pole measuring 15 m, which is greased. Hetries to climb 3 m and slips down 2 m every time. In how many attemptswill the monkey be able to climb 10 m of the pole? |
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Answer» 8times 7×3-7×2+3=10meters in one attempt net value of distance boy climb is 3–2 = 1min 6 attempts boy climbs = 6 min the 7th attempt, he climbs = 6+3–2 = 7 min the eighth attempt he reaches 7+3 = 10 m Hence answer 8 attempts |
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| 63797. |
e the folowing frectlions |
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Answer» (a) 14/6 - 1/4= (28 - 3)/12= 25/15 (b) 5/12 - 1/6= (5 - 2)/12 = 3/12= 1/4 (c) 1/10 - 1/15= (6 - 4)/60= 2/60 = 1/30 (d) 1/2 - 1/3= (3 - 2)/6 = 1/6 |
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| 63798. |
(Ăź) The amount of air present in a cylinder when a vacuum pump removes - of the4air remaining in the cylinder at a time. |
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Answer» Solution:Let us assume, initial quantity of air = 1 Therefore, quantity removed in first step = ¼ Remaining quantity after first step =1−14=34=1-14=34 Quantity removed in second step =34×14=316=34×14=316 Remaining quantity after second step =34−316=12−316=916=34-316=12-316=916 Here each subsequent term is not obtained by adding a fixed number to the previous term. Hence, it is not an AP. |
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| 63799. |
Identify the folowing figures(i |
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Answer» i) all sides are equal so it is equilateral 🔺ii) one angle is 90° so it right angle 🔺 iii) obtuse angleiv) one angle is greater than 90° so it is obtise angle 🔺 |
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| 63800. |
Soive the folowing taion fo t: genera outon. |
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