BB Logo Spacer
Spacer
Line
Line
Rate A Puzzle

?A large fresh water reservoir has two types of drainage system. Small pipes and large pipes.

6 large pipes, on their own, can drain the reservoir in 12 hours.

6 small pipes, on their own, can drain the reservoir in 18 hours.

How long will 6 large pipes and 6 small pipes take to drain the reservoir?

Show Answer

[Ref: ZNEC] © Kevin Stone

Vote:

1 Star 2 Stars 3 Stars 4 Stars 5 Stars

 

This website uses cookies, for more information please view our privacy policy.

Line
Line