Question

A recipe for banana bread spread requires 3 cups of bananas for every 1 1/2 cups of sugar used. At this rate, how many cups should be used if 2 cups of banana are used?

Answer 1

1 cup

Explanation:

You want to first find the original rate of how many cups of sugar you would need for 1 cup of bananas.

Divide 1 1/2 or 1.5 by 3 and you'll get .5 or 1/2 which is how many cups you'll need for 1 cup of bananas.

Therefore, just add 1/2 plus 1/2 since you need the answer for if you used 2 cups of bananas and you'll get 1 cup.

Answer 2

We need 1 cup of sugar for 2 cups of bananas

Explanation:

We can use proportions to solve this problem. Put bananas on the top and sugar on the bottom

3 cups 2 cups bananas

-------------- = ------------------

1 1/2 cups x cups sugar

Using cross products

3 *x = 2 * 1 1/2

Changing to decimals

3x = 2* 1.5

3x = 3

Divide by 3

3x/3 = 3/3

x=1

We need 1 cup of sugar for 2 cups of bananas