A cistern has two pipes. One can fill it with water in 16 hours and other can empty it in 10 hours. In how many hours will the cistern be emptied if bo...
P, Q and R three pipes connected to a tank. P and Q together fill the tank in 30 hours, Q and R together fill the tank in 40 hours. P and R together fil...
Tap ‘A’ and tap ‘B’ can fill a tank in 48 hours and 30 hours, respectively. If both taps are opened together, then find the time after which tap...
Two pipes A and B can fill a tank in 12 min., and 16 min, respectively. If both the pipes are opened simultaneously, after how much time A should be cl...
Pipe ‘A’ and pipe ‘B’, together can fill 32% of a tank in 8 hours while pipe ‘C’ takes 35 hours to empty it. ...
Pipes ‘A’ and ‘B’ can fill a tank in 6 hours and 9 hours, respectively. If pipe ‘C’ is opened along with pipes ‘A’ and ‘B’, then the...
Pipe T can empty a completely filled tank in 50 hours. Pipe R and T together can fill an empty tank completely in (z+5) hours. The efficiency of pipe R ...
In how many minutes can the faster Tap alone fill the tank, if Tap P and Q, working together, can fill the tank in 45 minutes and Tap P is three times f...
Pipe A can fill the empty tank in 25 minutes while pipe B can empty the half-filled same tank in 15 minutes. What is the time require to fill (80/3) % o...
Two pipes can alone independently fill a bucket in 10 and 12 minutes. Both are opened together for 3 minutes after which the second pipe is turned off. ...
