An above ground swimming pool is leaking. after 1/2 hour the pool has leaked 7/8 of a gallon of water. how many gallons of water per hour is the swimming pool leaking?

The important facts that are given in the question should be payed heed to at first.

Amount of water leaked by the pool in 1/2 hour = 7/8 gallon

Then

Amount of water leaked by the pool in 1 hour = (7/8) / (1/2) gallon

= (7 * 2) / 8 gallon

= 7/4 gallon.

So the swimming pool is leaking 7/4 gallon per hour. I hope this is the answer you were looking for and the procedure of doing this kind of problems is clear to you.