Question

A recipe calls for 10 cups of oatmeal. Benjamin wants to make 1/5 fewer servings than the recipe makes. Which expression represents how many cups of oatmeal Benjamin should use?

A. 0.8 * 10

B. 1.8 * 10

C. 0.2 * 10

D. 1.2 * 10

Answer 1

A. 0.8 * 10

1/5 fewer means 20% less than the original number of cups.

100% - 20% = 80% of the original recipe should be used by benjamin.

80% x 10 or 0.80 x 10 = 8 cups.

0.2 * 10 is the expression that represents the decrease in the measurement of cups.