Question

8,520 gallons of water begins to drain at a rate of 12 gallons per minute. Which equation can be used to find the number of minutes, m, it will take for the pool to be half full?

Answer 1

The time taken to drain water to be half full is 5 hours 55 min .

Explanation:

Given as :

The total quantity of water pool = 8520 gallons

The rate of water drain = 12 gallons per min

The time taken to drain water to be half full = t min

Now, According to question

Time of water drain =
`(\textrm total quantity of water in pool)/(\textrm rate of water drain)`

Or, time =
`(\textrm 8520 gallons)/(\textrm 12 gallons per min)`

Or, time = 710 minutes

So, The time taken to full empty the pool = 710 minutes

Again, time taken to ran water to half full =
`(710)/(2)`

Or, t = 355 minutes

So, time taken to drain water to be half full = t = 355 min = 5 hours 55 minutes

Hence, The time taken to drain water to be half full is 5 hours 55 min . Answer