Lessons

General Aptitude
31.1 Pipes and Cistern - General Questions

6 / 15

Q.

Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?

View Answer

Correct choice: D

Explanation:

6 / 15