An inlet fills a school's water tank in 26 hours and an outlet empties the full tank in 39 hours. If both are opened on the empty tank, after how many hours will it be full?

Question

Accepted Answer

78. Net rate = 1/26 − 1/39 = 3/78 − 2/78 = 1/78 tank per hour, so it fills in 78 hours.

An inlet fills a school's water tank in 26 hours and an outlet empties the full tank in 39 hours. If both are opened on the empty tank, after how many hours will it be full?

Step-by-Step Solution

Master this topic in 30 minutes a day.

More Time & Work / Pipes practice