Question

If it takes 1 4 cup of flour to make 1 6 of a cake, how many cups of flour are needed to make a whole cake?

Answer 1

1 1/2 cups of flour.

Explanation:

You can work this as a proportion:

1/4 cup → 1/6 of a cake

x cups → 1 cake

Cross-multiply.

(1/4 cup)(1 cake) = (x cups)(1/6 cake)

Solve for x.

x = 6(1/4) = 1 1/2 cups