Math. Pool begins with 1400 gal and drains 200 gal per hr how much water is in the pool after 5.2 h?

Apply data to the following equation.

Flow = Volume / Time

Flow : 200gal per hour > convert it to litres per minute
Volume : 1400gal > convert it to litres {let's take it as x and the volume should be founded as v }
Time : 5.2 hours > convert it to minutes

200gal per hour in (...)litres per minute = (x - v) / 5.2hr in minutes

solve and find the "v". Thats your answer. :)