Question

Two pipes running together can fill a tank in 11 1/ 9 minutes. If on pipe takes 5 minutes more than the other to fill the tank separately, find the time in which each pipe would fill the tank separately.

Answer 1

Let the time taken by one pipe to fill the tank be x minutes.

Time taken by the other pipe to fill the tank = (x+5) min 

Suppose the volume of the tank be V. 

Volume of the tank filled by one pipe in x minutes = v/x

Time taken by one pipe to fill the tank = 20 min Time taken by other pipe to fill the tank = (20 + 5) = 25 min