Question

Pipe ‘A’ can fill a tank in 25 hours while pipe ‘B’ takes 30 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 12 hours pipe ‘B’ is also opened. In how much time will the tank get filled completely?

A 90 hours
B 20 hours
C 80 hours
D 60 hours
Practice Next

More Pipes and cisterns Questions

Relevant for Exams:

Hey! Ask a query