Answer:
1.5 gallons of milk left at the end of the day.
Explanation:
To determine how much milk the Garcia family had left after drinking some for breakfast and lunch, we need to convert the amounts to a common unit of measurement.
1 gallon = 4 quarts
1 quart = 2 pints
So, the Garcia family drank a total of 1 quart + (3 pints / 2 pints/quart) = 2 quarts of milk.
Therefore, they had 2 gallons - (2 quarts / 4 quarts/gallon) = 1.5 gallons of milk left at the end of the day.