Quiz Discussion

Two pipes A and B can fill a cistern in 12 min and 16 min respectively. Both the pipes are opened together for a certain time but due to some obstruction, the flow of water was restricted to \(\frac{7}{8}\) of full flow in pipe A and \(\frac{5}{6}\) of full in pipe B. This obstruction is removed after some time and the tank are now filled in 3 min from that moment. How long was it before the full flow?

• 1] 8 min
• 2] 3 min
• 3] 5.6 min
• 4] 4.5 min
• 5] None of these

A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in:

• 1]

  4 days

• 2]

  6 days

• 3]

  8 days

• 4]

  12 days

A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in:

• 1] 45 minutes
• 2] 60 minutes
• 3] 75 minutes
• 4] 90 minutes

A does half as much work as B in one -sixth of the time.If together they take 10 days to complete a work, how much time shall B take to do it alone?

• 1] 13.33 days
• 2] 20 days
• 3] 30 days
• 4] 40 days

42 women can do a piece of work in 18 days, How many women would be required do the same work in 21 days.

• 1] 35
• 2] 36
• 3] 37
• 4] 38

A and B can together do a piece of work it in 6 days and A alone can do it in 9 days. The number of days B will take to do it alone is ?

• 1] 18 days
• 2] 24 days
• 3] 9 days
• 4] 12 days

To complete a piece of work A and B take 8 days, B and C 12 days. A, B and C take 6 days. A and C will take :

• 1] 7 Days
• 2] 7.5 Days
• 3] 8 Days
• 4] 8.5 Days

A contractor undertook to finish a work in 92 days and employed 110 men. After 48 days, he found that he had already done \(\frac{3}{5}\) part of the work, the number of men he can withdraw so that his work may still be finished in time is?

• 1] 45
• 2] 40
• 3] 35
• 4] 30

A boy and a girl together fill a cistern with water. The boy pours 4 liters of water every 3 minutes and girl pours 3 litres every 4 minutes. How much time will it take to fill 100 litres of water in the cistern?

• 1] 36 minute
• 2] 42 minutes
• 3] 48 minutes
• 4] 44 minutes

A's 2 days work is equal to B's 3 days work. If A can complete the work in 8 days, then to complete the work B will take ?

• 1] 15 days
• 2] 12 days
• 3] 16 days
• 4] 14 days