You serve 2 1/2 gallons of punch at a party. Your friends drink 1 3/4 gallons of the punch. Which of these containers is the smallest you can use to store the remaining punch?

Answer: 1 gallon.

Explanation:

The amount of punch served = 2 1/2 gallons

The amount of punch consumed = 1 3/4 gallons

The amount left = Total - consumed

2 1/2 - (1+3/4) = 5/2 - 7/4

10/4 - 7/4 = 3/4

This much amount of punch can be stored in one gallon only.