Normally an inlet fills a water drum in 7 hours, but a hole in the drum makes the filling take 8 hours. How long (in hours) would the hole alone take to empty the full drum?

Question

Accepted Answer

56. Hole's emptying rate = 1/7 − 1/8 = 8/56 − 7/56 = 1/56 per hour, so it empties the drum in 56 hours.

Normally an inlet fills a water drum in 7 hours, but a hole in the drum makes the filling take 8 hours. How long (in hours) would the hole alone take to empty the full drum?

Step-by-Step Solution

Master this topic in 30 minutes a day.

More Time & Work / Pipes practice