Answer:
60 US QUARTS
Explanation:
Since, 1 gallon = 4 US QUARTS
15 gallons = x
Therefore, 15 gallons × 4 US QUARTS / 1 gallon
= 60 US QUARTS
60 US Quarts
15 gallons = 60 US Quarts
1.6m questions
2.0m answers