Question

A car wash had to make their soap last 8 days .If they only have one-seventh of a gallon of soap ，how many should they use each day so it lasts 8 days ？

Answer 1

1/56 gallon

Explanation:

The car wash has 1/7 gallons of soap and they can use 1/8th of it each day. So, you would set up
`(1)/(7)` x
`(1)/(8)` =
`(1)/(56)`.