mathematics mcqs to prepare for nts, kppsc, fpsc, ppsc and more | mcqpk.com

mathematics Mcqs

2351. A can do a certain job in 12 days. B is 60% more efficient than A. The number of days it takes for B to do the same piece of work, is:_________?
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A. 15/2 days

B. 12/6 days

C. 34 days

D. 23 days

2352. 10 men can complete a work in 7 days. But 10 women need 14 days to complete the same work. How many days will 5 men and 10 women need to complete the work?
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A. 7

B. 5

C. 4

D. 6

2353. X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last ?
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A. 20 days

B. 6 days

C. 10 days

D. 15 days

2354. wo pipes X and Y fill a tank in 15 hrs. and 20 hrs. respectively, while a third pipe Z can empty the full tank in 25 hrs. All the three pipes are opened in the beginning. After 10 hrs. Z is closed. In how much time, will the tank be full ?
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A. 12 hrs

B. 14 hrs

C. 18 hrs

D. 16 hrs

2355. Machine P can print one lakh books in 8 hours. Machine Q can print the same number of books in 10 hours while machine R can print the same in 12 hours. All the machines started printing at 9 A.M. Machine P is stopped at 11 A.M. and the remaining two machines complete work. Approximately at what time will the printing of one lakh books be completed?
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A. 2:00 PM

B. 11:00 AM

C. 3:00 PM

D. 1:00 pm

2356. Two pipes P and Q can fill a cistern in 12 minutes and 16 minutes respectively. Simultaneously both the pipes are opened together, then after how much time Q should be closed so that the tank is full in 9 min ?
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A. 3 min

B. 2 min

C. 5 min

D. 4 min

2357. P can do a work in 24 days. Q can do the same work in 9 days and R can do the same in 12 days. Q and R start the work and leave after 3 days. P finishes the remaining work in_________days.
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A. 12

B. 11

C. 10

D. 9

2358. A and B can finish a piece of work in 20 days .B and C in 30 days and C and A in 40 days. In how many days will A alone finish the job?
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A. 34(2/7)

B. 45

C. 48

D. 44

2359. P takes twice as much time as Q or thrice as much time as R to finish a piece of work. They can finish the work in 2 days if work together. How much time will Q take to do the work alone?
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A. = 2

B. 7

C. 8

D. t; Q takes 12/2 days = 6 days to complete the work

E. 9

F. t; x = 12

2360. A and B together can complete a work in 1.2 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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A. 11 days

B. 10 days

C. 15 days

D. 20 days

2361. C takes 6 days to complete half of a work and D takes 5 days to complete 1/3rd of the same work. They take turns to complete the task. If C works for the first 4 days, in how many days will D complete the rest of the work without the help of C?
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A. 9 days

B. 8 days

C. 10 days

D. 12 days

2362. A and B can do a piece of work in 12 days; B and C in 15 days; C and A in 20 days. A alone can do the work in__________?
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A. none of these

B. 20 days

C. 40 days

D. 30 days

2363. If 6 men take 9 days to complete a work, how many men can complete the work in 3 days?
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A. 2 men

B. 9 men

C. 18 men

D. 12 men

2364. A and B can do a piece of work in 21 and 24 days respectively.They start the work together and after some days, A leaves and B completes the rest of the task in 9 days. After how many days did A leave?
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A. 7

B. 6

C. 8

D. 5

2365. P and Q can complete a work in 20 days and 12 days respectively. P alone started the work and Q joined him after 4 days till the completion of the work. How long did the work last?
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A. 5 days

B. 15 days

C. 12 days

D. 10 days

2366. To fill a cistern, pipes P, Q & R take 20, 15 & 12 minutes respectively. The time in minutes that the three pipes together will take to fill the cistern is:__________?
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A. 15 min

B. 20 min

C. 5 min

D. 10 min

2367. 6 men and 8 women can complete a work in 10 days. 26 men and 48 women can finish the same work in 2 days. 15 men and 20 women can do the same work in_______days.
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A. 4 days

B. 8 days

C. 2 days

D. 6 days

2368. A alone can finish a work in X days. B alone can finish the same work in X+5 days. Together, they take 6 days to complete the work. Find X
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A. 10

B. 12

C. 8

D. 9

2369. A and B can finish a work 30 days if they work together. They worked together for 20 days and then B left. A finished the remaining work in another 20 days. In how many days A alone can finish the work?
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A. 50

B. 40

C. 70

D. 60

2370. 8 men can dig a pit in 20 days. If a man works half as much again as a boy, then 4 men and 9 boys can dig a similar pit in:__________?
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A. 20 days

B. 18 days

C. 12 days

D. 16 days

2371. Farjan and Kashif can complete a task in 30 days. Farjan leaves after 20 days and Kashif alone completes it in another 25 days. How many days does Farjan alone take to complete the entire task?
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A. 60

B. 75

C. 45

D. 50

2372. 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 10 days and C alone in 50 days, then B alone could do it in_________?
0

A. 30 days

B. 15 days

C. 20 days

D. 25 days

2373. Kamal will complete work in 20 days. If Suresh is 25% more efficient than Kamal, he can complete the work in________days.
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A. 14

B. 16

C. 15

D. 11

2374. If X and Y complete a certain work in 10 days, Y and Z in 16 days and X and Z in 22 days, find the time required for each one to complete the work while working separately.
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A. 40, 30, 120 days

B. 120, 60, 80 days

C. 30, 40, 60 days

D. 120, 40, 60 days

2375. Assume that 20 cows and 40 goats can be kept for 10 days for Rs.460. If the cost of keeping 5 goats is the same as the cost of keeping 1 cow, what will be the cost for keeping 50 cows and 30 goats for 12 days?
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A. Rs.1104

B. Rs.934

C. Rs.1000

D. Rs.1210

2376. P, Q and R can complete a work in 24, 6 and 12 days respectively. The work will be completed in________days if all of them are working together.
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A. 5

B. 3 3?7

C. 4

D. 2

2377. A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately. If A begins first, in how many days the work will be completed ?
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A. 42/4 days

B. None of these

C. 41/4 days

D. 55 days

2378. If 6 men working together can complete 50 identical tasks in 4 hours then how many such identical tasks can be completed if 10 men are working together for 6 hours?
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A. 125

B. 25

C. 60

D. 20

2379. If 6 men can make 10 sofas in 2 days, then 8 men can make 8 sofas in__________?
0

A. 1.8 days

B. 1.5 days

C. 1.2 days

D. 1 day

2380. 3 men and 7 women can complete a work in 10 days . But 4 men and 6 women need 8 days to complete the same work . In how many days will 10 women complete the same work?
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A. 40

B. 13

C. 30

D. 50

2381. A can do a particular work in 6 days . B can do the same work in 8 days. A and B signed to do it for Rs. 3200. They completed the work in 3 days with the help of C. How much is to be paid to C?
0

A. Rs. 400

B. Rs. 600

C. Rs. 380

D. Rs. 420

2382. P can lay railway track between two stations in 16 days. Q can do the same job in 12 days. With the help of R, they completes the job in 4 days. How much days does it take for R alone to complete the work?
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A. 10 days

B. 9(2/5) days

C. 9(1/5) days

D. 9(3/5) days

2383. Jameel can complete a task in 15 hours and Nasir can complete the same task in 12 hours. Jameel starts the task at 9:00 am and stops working at 2:00pm. Nasir starts working on the task at 4:00 pm. At what time is the task completed?
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A. 10:00 PM

B. 12:00 PM

C. 12:00 am

D. 2:00 AM

2384. A is thrice as good a work man as B and takes 10 days less to do a piece of work than B takes. B can do the work in:___________?
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A. 30 days

B. 16 days

C. 15 days

D. 14 days

2385. B can work 3 times faster than A. They work together on a task and complete it in a day. How long does it take for B alone to complete the task?
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A. 32 hours

B. 48 hours

C. 4 days

D. 3 days

2386. A and B can do a piece of work in 72 days; B and C can do it in 120 days; A and C can do it in 90 days. In what time can A alone do it ?
0

A. 80 days

B. 120 days

C. 150 days

D. 100 days

2387. If 12 men work 8 hours a day to complete a work in 10 days, how many men working 12 hours a day can complete the work in 5 days?
0

A. 12

B. 4

C. 8

D. 16

2388. A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ?
0

A. 70 days

B. 40 days

C. 50 days

D. 60 days

2389. 15 men can build a 500m long wall in 30 days. In how many days can 30 men build a 1.2 km long wall?
0

A. 48 days

B. 40 days

C. 24 days

D. 36 days

2390. A leak in the bottom of a tank can empty the full tank in 6 hrs. An inlet pipe fills water at the rate of 4 lit. a minute. When the tank is full, the inlet is opened and due to the leak, the tank is empty in 8 hrs. The capacity of the tank in liters is_________?
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A. 6,890 litres

B. 5,760 litres

C. 5,750 litres

D. None of these

2391. P is able to do a piece of work in 15 days and Q can do the same work in 20 days. If they can work together for 4 days, what is the fraction of work left?
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A. 8/15

B. 15-Nov

C. 11-Feb

D. 15-Jul

2392. Bilal can do a work in 15 days and Jalal in 12 days. If they work on it together for 4 days, the fraction of work that is left is________?
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A. 7-Apr

B. 2/5

C. 5-Mar

D. 4-Jan

2393. 2 men and 12 women can finish a job in 4 days. 4 men and 6 women can do the same job in 5 days. Find the time taken by 1 man and 1 woman to complete the job.
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A. 30 days

B. 25 days

C. 24 days

D. 20 days

2394. A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in___________days if they work together.
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A. 18 days

B. 22 days

C. 26 days

D. 24 days

2395. A can do (1/3) of a work in 5 days and B can do (2/5) of the work in 10 days. In how many days both A and B together can do the work ?
0

A. 48/5 days

B. 75/8 days

C. 44/6 days

D. None of these

2396. A tap can fill a tank in 32 min. and another can empty it in 16 min. If the tank is already half full and both the tanks are opened together, the tank will be_________?
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A. 14 min

B. 20 min

C. 12 min

D. 16 min

2397. Twelve children take sixteen days to complete a work which can be completed by 8 adults in 12 days. After working for 3 days, sixteen adults left and six adults and four children joined them. How many days will they take to complete the remaining work ?
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A. 4 days

B. 3 days

C. 6 days

D. 8 days

2398. A completes 80% of a work in 20 days. Then B also joins and A and B together finish the remaining work in 3 days. How long does it need for B if he alone completes the work?
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A. 31 days

B. 22 days

C. 37 days

D. 22 days

2399. P can do a work in the same time in which Q and R together can do it. If P and Q work together, the work can be completed in 10 days. R alone needs 50 days to complete the same work. then Q alone can do it in__________?
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A. 25 days

B. 30 days

C. 15 days

D. 20 days

2400. A,B,C, can do a work in 8,14,16 days respectively. A does the work for the first 2 days. B continues from it and finishes 2/3rd of the remaining work. C finishes the remaining work. How many days would have taken to complete the work?
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A. 11

B. 13

C. 12

D. 15

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