Question

You are going to mix a gallon bucket of window cleaner. The instructions direct you to mix 1 part cleaner to 3 parts water. How much cleaning solution will you need to use?*

Answer 1

So 1 gallon of window cleaner
1 part is cleaner
3 part is water
so therefor
1/(1+3)=1/4=cleaner
3/4=water
1 gallon=4 quarts
1 quart cleaner
3 quart water

1 quart