Answer:
Kristen has only 1 quart of water more than him
Explanation:
Since 1 gallon equals 4 quarts you would multiply...
1gallonx7,4 quarts x 7= 7 gallon and 28 quarts
Next thing to do si subtract you will do that by subtracting 27 quarts that are from mike from the 28 quarts that are from kristen. the result is 1 quart more