5 gal 2 qt + 4 gal 5 qt (There are 4 quarts in one gallon.)
A. 10 gal 3 qt
B. 9 gal 3 qt
C. 9 gal 1 qt
To add these quantities we need to first convert the quarts to gallons:
5 gal 2 qt = 5 + 2/4 = 5.5 gallons
4 gal 5 qt = 4 + 5/4 = 4.25 gallons
Now add the gallons:
5.5 gallons + 4.25 gallons = 9.75 gallons
Convert the answer back to gallons and quarts:
9 gallons and .75 gallons * 4 quarts/gallon = 9 gallons 3 quarts.
So the answer is B. 9 gal 3 qt.