Quiz Discussion

Pipe A can fill a tank in 4 hours and pipe B can fill it 6 hours. If they are opened on alternate hours and if pipe A is opened first then in how many hours, the tank shall be full ?

Course Name: Quantitative Aptitude

  • 1]

    hours

  • 2]

    hours

  • 3]

    hours

  • 4]

    hours

Solution
No Solution Present Yet

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# Quiz
1
Discuss

An outlet pipe can empty a cistern in 3 hours. In what time will empty 2/3 of the cistern?

 

  • 1] 3 hours
  • 2] 5 hours
  • 3] 2 hours
  • 4] 4 hours
Solution
2
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
3
Discuss

A tank can be filled by pipe A in 2 hours and pipe B in 6 hours. At 10 A.M. pipe A was opened. At what time will the tank be filled if pipe B is opened at 11 A.M. ?

  • 1] 12.45 A.M.
  • 2] 5 P.M.
  • 3] 11.45 A.M.
  • 4] 12 P.M.
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

An electric pump can fill a tank in 3 hours. Because of a leak in the tank, it  took 321​ hours to fill the tank. The leak can drain all the water off the tank in

  • 1]

    12 hours

  • 2]

    10 1/2 hours

  • 3]

    6 1/2 hours

  • 4]

    21 hours

Solution
6
Discuss

Three pipes P, Q and R can separately fill a cistern in 4, 8 and 12 hours respectively. Another pipe S can empty the completely filled cistern in 10 hours. Which of the following arrangements will fill the empty cistern in less time than others?

  • 1] Q alone is open
  • 2] P, R and S are open
  • 3] P and S are open
  • 4] P, Q and S are open
Solution
7
Discuss

Pipe A can fill the tank in 8 hours and pipe B can fill it in 12 hours. If pipe A is opened at 7:00 AM and pipe B is opened at 9:00 AM, then at what time will the tank be full ?

  • 1] 12:00 PM
  • 2] 12:30 PM
  • 3] 11:48 PM
  • 4] 12:36 PM
Solution
8
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
9
Discuss

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:

 

  • 1] 5 min.
  • 2] 9 min.
  • 3] 10 min.
  • 4] 15 min.
Solution
10
Discuss

Having the same capacity 9 taps fill up a water tank in 20 minutes. How many taps of the same capacity are required to fill up the same water tank in 15 minutes ?

  • 1] 10 taps
  • 2] 12 taps
  • 3] 15 taps
  • 4] 18 taps
Solution
# Quiz