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

mathematics Mcqs

3601. If a man lost 4% by selling oranges at the rate of 12 a rupee at how many a rupee must he sell them to gain 44%?
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A. 9

B. 10

C. 8

D. 7

3602. A cycle is bought for Rs.900 and sold for Rs.1080, find the gain percent?
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A. 18%

B. 16.67%

C. 25%

D. 20%

3603. An article is bought for Rs.675 and sold for Rs.900, find the gain percent?
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A. 33 1/3%

B. 30%

C. 16.67%

D. 33.17%

3604. By selling 150 mangoes, a fruit-seller gains the selling price of 30 mangoes. Find the gain percent?
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A. 25%

B. 30%

C. 18%

D. 20%

3605. A watch was sold at a loss of 10%. If it was sold for Rs.140 more, there would have been a gain of 4%. What is the cost price?
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A. Rs.1000

B. Rs.860

C. Rs.760

D. Rs.1140

3606. What profit percent is made by selling an article at a certain price, if by selling at 2/3rd of that price, there would be a loss of 20%?
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A. 12%

B. 13.03%

C. 25%

D. 20%

3607. A single discount equivalent to the discount series of 20%, 10% and 5% is_______?
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A. 33.50%

B. 31.6%

C. 25%

D. 30%

3608. The cost price of a radio is Rs.1500 and it was sold for Rs.1230, find the loss %?
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A. 6%

B. 18%

C. 9%

D. 15%

3609. Pipe A can fill a tank in 16 minutes and pipe B cam empty it in 24 minutes. If both the pipes are opened together after how many minutes should pipe B be closed, so that the tank is filled in 30 minutes?
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A. 24

B. 23

C. 20

D. None of these

3610. Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank?
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A. 25 min

B. 50 min

C. 12 min

D. 15 min

3611. Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in?
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A. 4 1/2 hours

B. 1 13/17 hours

C. 2 8/11 hours

D. 3 9/17 hours

3612. Two pipes A and B can separately fill a tank in 12 and 15 minutes respectively. A third pipe C can drain off 45 liters of water per minute. If all the pipes are opened, the tank can be filled in 15 minutes. What is the capacity of the tank?
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A. 480 liters

B. 675 liters

C. 600 liters

D. 540 liters

3613. Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours. C is closed A and B can fill the remaining par in 7 hours. The number of hours taken by C alone to fill the tank is?
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A. 16

B. 10

C. 14

D. 12

3614. A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?
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A. 20 hrs

B. 35 hrs

C. 25 hrs

D. Cannot be determined

3615. Pipe A can fill a tank in 5 hours, pipe B in 10 hours and pipe C in 30 hours. If all the pipes are open, in how many hours will the tank be filled?
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A. 3.5

B. 2

C. 3

D. 2.5

3616. An outlet pipe can empty 2/3 rd of a cistern in 12 minutes. In 8 minutes, what part of the cistern will be emptied?
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A. 7-Apr

B. 4/9

C. 3-Feb

D. 6-Jan

3617. A top can fill a cistern in 8 hours and another can empty it in 16 hours. If both the taps are opened simultaneously the time (in hours) to fill the tank is
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A. 24

B. 8

C. 10

D. 16

3618. A tap can fill a tank in 6 hours. After half the tank is filled three more similar taps are opened. What is the total time taken to fill the tank completely?
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A. 4 hrs

B. 3 hrs 45 min

C. 4 hrs 15 min

D. 3 hrs 15 min

3619. Two pipes A and B can separately fill a tank in 2 minutes and 15 minutes respectively. Both the pipes are opened together but 4 minutes after the start the pipe A is turned off. How much time will it take to fill the tank?
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A. 10 min

B. 12 min

C. 11 min

D. 9 min

3620. pipes P and Q would fill a cistern 18 and 24 minutes respectively. Both pipes being opened, find when the first pipe must be turned off so that the cistern may be just filled in 12 minutes?
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A. after 8 1/2 mins

B. after 9 mins

C. after 12 mins

D. after 10 mins

3621. Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill cistern. How much time will be taken by A to fill the cistern separately?
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A. 2 hrs

B. 6 hrs

C. 8 hrs

D. 1 hr

3622. Two pipes function simultaneously the reservoir will be filled in 12 hours. One pipe fills reservoir 10 hours faster than the other. How many hours does the faster pipe take to fill the reservoir?
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A. 25 hrs

B. 28 hrs

C. 35 hrs

D. 20 hrs

3623. A large tanker can be filled by two pipes A and B in 60 and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
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A. 30 min

B. 15 min

C. 20 min

D. 27.5 min

3624. A cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 9 hours. If both the taps are opened simultaneously, then after how much time will the cistern get filled?
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A. 4.5 hrs

B. 7.2 hrs

C. 5 hrs

D. 6.5 hrs

3625. One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in:
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A. 108 min.

B. 192 min.

C. 144 min.

D. 81 min.

3626. A cistern has a leak which would empty the cistern in 20 minutes. A tap is turned on which admits 4 liters a minute into the cistern, and it is emptied in 24 minutes. How many liters does the cistern hold?
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A. 720 liters

B. 800 liters

C. 600 liters

D. 480 liters

3627. Two pipes A and B can fill a cistern in 12 and 15 minutes respectively. Both are opened together but after 3 minutes A is turned off. After how much more time will the cistern be filled?
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A. 5 1/4 min

B. 9 1/4 min

C. 3 1/4 min

D. 8 1/4 min

3628. Two pipes can fill a tank in 18 minutes and 15 minutes. An outlet pipe can empty the tank in 45 minutes. If all the pipes are opened when the tank is empty, then how many minutes will it take to fill the tank?
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A. 10

B. 12

C. 11

D. 13

3629. A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in?
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A. 40 hrs

B. 20 hrs

C. 25 hrs

D. 16 hrs

3630. Two pipes can separately fill a tank in 20 and 30 hours respectively. Both the pipes are opened to fill the tank but when the tank is full, a leak develops in the tank through which one-third of water supplied by both the pipes goes out. What is the total time taken to fill the tank?
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A. 18 hrs

B. 16 hrs

C. 15 hrs

D. 12 hrs

3631. Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in_________?
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A. 7 hours

B. 7 1/2 hours

C. 6 2/3 hours

D. 6 hours

3632. A cistern which could be filled in 9 hours takes one hour more to be filled owing to a leak in its bottom. If the cistern is full in what time will the leak empty it?
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A. 45 hrs

B. 60 hrs

C. 75 hrs

D. 90 hrs

3633. A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?
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A. 4 hrs 15 min

B. 4 hrs

C. 3 hrs 45 min

D. 3 hrs 15 min

3634. One top can fill a cistern in 2 hours and another can empty the cistern in 3 hours. How long will they take to fill the cistern if both the taps are opened?
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A. 5 Hours

B. 7 Hours

C. 8 Hours

D. 6 Hours

3635. A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
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A. 15 min

B. 20 min

C. 27.5 min

D. 30 min

3636. A pipe can fill a cistern in 20 minutes whereas the cistern when fill can be emptied by a leak in 28 minutes. When both pipes are opened, find when the cistern will be full?
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A. 48 min

B. 70 min

C. 60 min

D. 80 min

3637. One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill tank in 36 min, then the slower pipe alone will be able to fill the tank in?
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A. 108 min

B. 192 min

C. 81 min

D. 144 min

3638. A water tank is two-fifth full. Pipe A can fill a tank in 10 minutes and pipe B can empty it in 6 minutes. If both the pipes are open, how long will it take to empty or fill the tank completely?
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A. 6 min. to empty

B. 9 min. to empty

C. 9 min. to full

D. 6 min. to full

3639. Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full is_______?
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A. 6 hrs

B. 6 2/3 hrs

C. 7 1/2 hrs

D. 7 hrs

3640. Two taps can separately fill a cistern 10 minutes and 15 minutes respectively and when the waste pipe is open, they can together fill it in 18 minutes. The waste pipe can empty the full cistern in?
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A. 23 min

B. 13 min

C. 7 min

D. 9 min

3641. A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full the leak will empty it in.
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A. 16 hrs

B. 40 hrs

C. 20 hrs

D. 25 hrs

3642. Pipes A and B can fill a cistern in 8 and 24 minutes respectively. They are opened an alternate minutes. Find how many minutes, the cistern shall be full?
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A. 10 min

B. 6 min

C. 12 min

D. 19 min

3643. Pipe A can fill a tank in 6 hours. Due to a leak at the bottom, it takes 9 hours for the pipe A to fill the tank. In what time can the leak alone empty the full tank?
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A. 16 hours

B. 15 hours

C. 17 hours

D. 18 hours

3644. Two pipes A and B can separately fill a cistern in 60 min and 75 min respectively. There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 min. In how much time, the third pipe alone can empty the cistern?
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A. 110 min

B. 90 min

C. 100 min

D. 120 min

3645. A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is?
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A. 10 hrs

B. 6 hrs

C. 15 hrs

D. 30 hrs

3646. A tank is filled in eight hours by three pipes A, B and C. Pipe A is twice as fast as pipe B, and B is twice as fast as C. How much time will pipe B alone take to fill the tank?
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A. 36 hours

B. 32 hours

C. 28 hours

D. 24 hours

3647. Two pipes A and B can separately fill a cistern in 10 and 15 minutes respectively. A person opens both the pipes together when the cistern should have been was full he finds the waste pipe open. He then closes the waste pipe and in another 4 minutes the cistern was full. In what time can the waste pipe empty the cistern when fill?
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A. 8 min

B. 10 min

C. 7 min

D. 9 min

3648. Two pipes A and B can fill a cistern in 37 1/2 minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the pipe B is turned off after?
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A. 15 min

B. 9 min

C. 5 min

D. 10 min

3649. Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is?
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A. 100 gallons

B. 120 gallons

C. 180 gallons

D. 60 gallons

3650. A leak in the bottom of a tank can empty the full tank in 6 hours. An inlet pipe fills water at the rate of 4 liters per minute. When the tank is full in inlet is opened and due to the leak the tank is empties in 8 hours. The capacity of the tank is?
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A. 6970 liters

B. 5760 liters

C. 5846 liters

D. 5260 liters

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