Home » Aptitude » Pipes and Cistern

Pipes A and B can fill a cistern in 15 hours together. But ifthese pipes operate separately A takes 40 hours less than Bto fill the tank. In how many hours the pipe A will fill thecistern working alone?

Correct Answer: 20

Explanation:

Let A takes x hours, then B = (x+40) hours


1/x + 1/x+40 = 1/15


x = 20


← Previous Question Next Question→

More Questions from Pipes and Cistern

Discussion & Comments

No comments yet. Be the first to comment!
Join Discussion