Question

Between 11P.M. and 8;36 A.M.​, the water level in a swimming pool decreased by
4/15. Assuming that the water level decreased at a constant​ rate, how much did the water level drop each​ hour?

Answer 1

Step-by-step explanation:

Over a period of 9 hours and 36 minutes, the water level decreased by 8/25 of an inch.

 

So the water level decreased at a rate of

 

(inches it went down)/(time that passed)

 

Let's get 9 hours and 36 minutes all in minutes: 9(60) + 36 = 576 minutes

 

Then (8/25)/576 = 8/(25*576) will give us the rate it decreased in inches per minute.