Question on customary units for weights of a liquid

Question

kristen had 6 gallons of water

mike has 23 quarts of water

how many more cups of water does Kristen have than mike

Answer 1

Kristen has 6 gallons = 4(6) quarts = 24 quarts

Mike has 23 quarts

24-23 = 1 quart

Kristen has 1 quart more than Mike

convert 1 quart to cups

1 quart = 4 cups

Kristen has 4 cups more than Mike

easy to remember 1 liquid gallon = 4 quarts

"quart" is like the coin "quarter" 4 quarters in a dollar, 4 quarts in a gallon

also 4 cups in a quart. cups are a quarter of a quart