Final answer:
The correct option is D. 60. To convert 15 gallons to quarts, multiply by the conversion factor of 4 quarts per gallon to get 60 quarts.
Step-by-step explanation:
To determine how many quarts are in 15 gallons of water, we use the conversion factor between gallons and quarts. Since 1 gallon is equivalent to 4 quarts, we multiply the number of gallons by this conversion factor.
First, check if you will multiply or divide. Multiply when converting a larger unit to a smaller unit. Then, find the unit equivalence.
1 gallon = 4 quarts
Finally, multiply the number of gallons by 4.
15 gallons x 4 = 60 quarts
The answer is 60 quarts.
Therefore, we calculate 15 gallons × 4 quarts/gallon = 60 quarts.