Quiz Discussion

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

Course Name: Quantitative Aptitude

  • 1] 10
  • 2] 12
  • 3] 14
  • 4] 16
Solution
No Solution Present Yet

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# Quiz
1
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
2
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
3
Discuss

A pump can fill a tank with water in 2 hours. Because of a leak, it took hours to fill the tank. The leak can drain all the water of the tank in:

 

  • 1]

    hours

  • 2]

    7 hours

  • 3]

    8 hours

  • 4]

    14 hours

Solution
4
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]

    5/11

  • 2]

    6/11

  • 3]

    7/11

  • 4]

    8/11

Solution
5
Discuss

A cistern has two taps which fill it in 12 minutes and 15 minutes respectively. There is also a waste pipe in the cistern. When all the pipes are opened, the empty cistern is full in 20 minutes. How long will the waste pipe take to empty the full cistern?

  • 1]

    12 min

  • 2]

    10 min

  • 3]

    8 min

  • 4]

    16 min

Solution
6
Discuss

A tap can completely fill a water tank in 8 hours. The water tank has a hole in it through which the water leaks out. The leakage will cause the full water tank to get empty in 12 hours. How much time will it take for the tap the the tank completely with the hole?

  • 1] 16 hours
  • 2] 18 hours
  • 3] 24 hours
  • 4] None of these
Solution
7
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
8
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
9
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
10
Discuss

A pipe can fill a tank in x hours and another can empty it in y hours. In how many hours they together fill it in ( y > x) ?

  • 1]

    (x - y) hours

  • 2]

    (y - x) hours

  • 3]

     hours

  • 4]

    hours

Solution
# Quiz