Answer:
Your answer will be 10.5 gallons an hour.
Step-by-step explanation:
I find it odd how this is a law-related question but oh well lol.
Anyways,
the pool is 63 gallons, right? and you filled it up for a total of 6 hours.
All you need to do is divide 63/6 and you would get your answer: 10.5.