10 gallons equals 40 quarts.
To understand this conversion, it’s important to know the relationship between gallons and quarts. In the U.S. measurement system, 1 gallon is equal to 4 quarts. Therefore, to find out how many quarts are in 10 gallons, you simply multiply the number of gallons by 4.
So, 10 gallons × 4 quarts/gallon = 40 quarts. This means that 10 gallons is equivalent to 40 quarts.