Last year, Chelsea made 64 one-cup servings of soup for a school party. This year she will make four times the amount of soup that she made last year. How many gallons of soup will Chelsea make this year?

Chelsea made 16 gallons of soup this year

Solution:

Given that,

Last year, Chelsea made 64 one-cup servings of soup for a school party

We know that,

1 gallon = 16 cups

Therefore,

4 gallons = 64 cups

Thus last year she made 4 gallons of soup

This year she will make four times the amount of soup that she made last year.

Gallons of soup made this year = four times the amount of soup that she made last year

Gallons of soup made this year = 4 x 4 = 16

Thus Chelsea made 16 gallons of soup this year