Question

Between 11 P.M. and 8:36 A.M.​, the water level in a swimming pool decreased by 8 25 in. Assuming that the water level decreased at a constant​ rate, how much did the water level drop each​ hour?

Answer 1

Answer:

0.8594 in/hr

Step-by-step explanation:

Decreased in the water level is 8.25 in.

Time 11 P.M. and 8:36 A.M.  is 9 hr 36 min = 9.6 hr.

The rate of decreasing water level is constant.

So, $\text{Rate}=\frac{\text{Level decreased}}{\text{Time taken}}$

$\Rightarrow \text{Rate}=\frac{8.25}{9.6}=0.8594 in/hr$.

Hence, the water level drop at the rate of 0.8594 in/hr.