Question

The Hendrix family was draining their pool at the end of

summer. They found that the water level goes down by 0.4
feet every hour. If the water level in the pool has changed by
-1.4 feet, how long have they been draining the pool?

Answer 1

3.5 hours

Explanation:

If the water goes down by 0.4 feet every hour

we can add 0.4 + 0.4 + 0.4 (0.4 x 3) and get 1.2 and 1.4 - 1.2 - 0.2

And we also know that half of 0.4 is 02 so we can add 0.2 to 1.2 in order to get our desired answer. Which is 1.4 So now let's add what we multipleied by

3 + 1/2 = 3.5