Question

Pipes ‘X’ and ‘Y’ alone can fill a tank in 12 minutes and 18 minutes, respectively, while pipe ‘Z’ can empty the same tank in 36 minutes. If all three pipes are opened together, then find the time taken to fill the tank.

A 4 mins
B 9 mins
C 12 mins
D 20 mins
Practice Next

More Pipes and cisterns Questions

Hey! Ask a query