Question

PM water holes can feel a pull in 30 minutes a larger waterholes Canfield the same pool in 20 minutes a clove hoses are turned on at the same time how long would it take to fill the pool

Answer 1

12 minutes.

Explanation:

A water hole can fill a pull in 30 minutes and a larger hole can fill the same pull in 20 minutes.

Therefore, the small hole can fill in 1 minute the
`(1)/(30)` part of the pull and the large hole can fill in 1 minute the
`(1)/(20)` part of the pull.

So, if both the holes are open within 1 minute they will fill the tank by
`((1)/(20) + (1)/(30)) = (1)/(12)` part of the pull.

Hence, the total pull will be filled within
`1 / (1)/(12) = 12` minutes. (Answer)