Quiz Discussion

Two pipes A and B can fill a cistern in 37.5 minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the B is turned off after:

 

Course Name: Quantitative Aptitude

  • 1] 5 min.
  • 2] 9 min.
  • 3] 10 min.
  • 4] 15 min.
Solution
No Solution Present Yet

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# Quiz
1
Discuss

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:

  • 1]

    6 hours

  • 2]

    hours

  • 3]

    7 hours

  • 4]

    hours

Solution
2
Discuss

A water tap fills a tub in 'p' hours and a sink at the bottom empties it in 'q' hours. If p < q and both tap and sink are opened the tank is filled in 'r' hours, then the relation between p, q, r :

  • 1]

    1/r = 1/p +1/q

  • 2]

    1/r = 1/p -1/q

  • 3]

    r = p + q

  • 4]

    r = p - q

Solution
3
Discuss

Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes, and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P, Q and R respectively. What is the proportion of the solution R in the liquid in the tank after 3 minutes?

  • 1]

  • 2]

  • 3]

  • 4]

Solution
4
Discuss

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?

  • 1] 3 hrs 15 min
  • 2] 3 hrs 45 min
  • 3] 4 hrs
  • 4] 4 hrs 15 min
Solution
5
Discuss

A water tank can be filled by a tap in 30 minutes and another tap can fill it in 60 minutes. If both taps are kept open for 5 minutes and then the first tap is closed, how long will it take foe the tank to be filled ?

  • 1] 20 minutes
  • 2] 25 minutes
  • 3] 30 minutes
  • 4] 45 minutes
Solution
6
Discuss

Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?

  • 1] 10 min. 20 sec.
  • 2] 11 min. 45 sec.
  • 3] 12 min. 30 sec.
  • 4] 14 min. 40 sec.
Solution
7
Discuss

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?

  • 1] 15 minutes
  • 2] 20 minutes
  • 3] 27.5 minutes
  • 4] 30 minutes
Solution
8
Discuss

Three pipes A, B and C can fill a tank in 6 hours, 9 hours and 12 hours respectively. B and C are opened for half an hour, then A is also opened. The time taken by the three pipes together to fill the remaining part of the tank is -

  • 1]

    3 hours

  • 2]

    2 hours

  • 3]

     hours

  • 4]

    hours

Solution
9
Discuss

Water is continuously supplied from a reservoir to a locality at the steady rate of 10000 liters per hours. When delivery exceeds demand the excess water is stored in a tank. If the demand for 8 consecutive three hour periods is 10000, 10000, 45000, 25000, 40000, 15000, 60000 and 35000 liters respectively, what will be the minimum capacity required of the water tank (in thousand liters)to meet the demand and avoid any wastage?

  • 1] 10
  • 2] 30
  • 3] 40
  • 4] 50
Solution
10
Discuss

A tank has a leak which would empty the completely filled tank in 10 hours. If the tank is full of water and a tap is opened which admits 4 litres of water per minute in the tank , the leak takes 15 hours to empty the tank. How many litres of water does the tank hold?

  • 1] 2400 litters
  • 2] 4500 litters
  • 3] 1200 litters
  • 4] 7200 litters
Solution
# Quiz