A pipe can fill a tank in 6 hours. Another pipe can empty the filled tank in 30 hours. If both the pipes are opened simultaneously, then the time (in hours) in which the tank will be two-third filled, is
A15
B10
C20
D5
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
3 men or 4 women or 6 boys can do a piece of work in 2 days. In how many days 2 men, 3 women and 4 boys together can do the work.
P is twice as efficient as Q. Q takes 12 days to complete a job. If both of them work together, how much time will they take to complete the job?
A and B can complete a piece of work in 8 days, B and C can do it in 12 days, C and A can do it in 8 days. A, B and C together can complete it in
Pipe A can fill a cistern in 6 hours and pipe B can fill it in 8 hours. Both the pipes are opened simultaneously, but after two hours, pipe A is closed. How many hours will B take to fill the remaining part of the cistern ?
A tap can fill a tank in 8 hours. After half the tank is filled, four more similar taps are
opened. What is the total time taken to fill the tank completely?