Question

For a given recipe, 30 cups of flour are mixed with 6 cups of sugar. How many cups of flour should be used if 30 cups of sugar are used?

Answer 1

To keep the ratio of flour to sugar the same, we can set up a proportion:

30 cups of flour / 6 cups of sugar = x cups of flour / 30 cups of sugar

Cross multiply to solve for x:

6x = 900

Divide by 6 on both sides:

x = 150

Therefore, if 30 cups of sugar are used, 150 cups of flour should be used.