Question

A swimming pool is being drained with a pump. The pump drains the pool at a constant rate, The pool's water level drops 3 inches in 6 hours was the rate per hour of the water level change?

Answer 1

3 inches in 6 hours = ___ inches in 1 hour
Set up a proportion then cross multiply to solve.
(3/6) = (x/1)
6x=3
Divide both sides by 6
x = 3/6 = 1/2
1/2 inch per hour

Answer 2

.5 = 1 hour
.5 per hour