craig is selling apple cider at the fall festival he prepared 5 gallons of cider, which is equal to 20 quarts he sold 18 quarts craig wants to know the amount of cider he sold in gallons.

how many quarts in 1 gallon?
the unit rate is ? quarts per gallon

There are 4 quarts in 1 gallon.

Therefore, the unit rate is 4 quarts per gallon.