One pipe can fill a tank four times as fast as another pipe. If together the two pipes can fill the tank in 24 minutes, then find out the time taken by the faster pipe to fill the tank?
Solution: Let the slower pipe alone fill the tank in x minutes.
Then, the faster pipe alone fill the tank in x/4 minutes
4/x + 1/x = 1/24
=> 5/x = 1/24
=> x = 120.
.'. The faster pipe alone fill the tank in x/4 minutes = 120/4 = 30 min.
Back To Top