Question

4. The Navarro family uses an average of 225 gallons of water per day, 5 gallons of water per day, 5 gallons of water which goes through the family's water filter. The Navarros' water filter can process 450 gallons before it needs to be replaced. After how many days of average water use will the family need to replace their filter?

Answer 1

90days

Explanation:

They use 225 gallons of water per day.

If the filter filters 5 gallons per day hence :

For the filter to have a maximum of 450 gallons, it means:

The number of days before the filter would be replaced is :

450/5 = 90days

Answer 2

90 days

Explanation:

water usage= 225 g/day

water filtered= 5 g/day

filter life gallons= 450 g

filter life days= 450/5= 90 days