One recipe for eight people requires 5 cups of flour. Al expects only six people; he wants to cut the recipe so that it will serve six.

Question

Quizplus · Accepted Answer

The Answer is A) If Al is using additive thinking, 8 - 6 = 2, so he should use 5 - 2 = 3 cups of flour.
B) The recipe calls for 5/8 a cup of flour per person, so for six people, Al should use 6 × (5/8), or 3 3/4, cups of flour.
C) The part B method is better because, to taste the same, recipes should use the same proportions of ingredients. Rates allow that.

One Recipe for Eight People Requires 5 Cups of Flour