Question

A fruit punch recipe calls for 18 cups of soda and 6 cups of grape juice.how many cups of soda are needed to make fruit punch using 4 cups of grape juice

Answer 1

A way to solve this problem is to divide the number of cups of grape juice by the number of cups of soda to get a ratio:

`(6)/(18)=(1)/(3),`

so the recipe calls for 3 cups of soda per cup of grape juice. In other words, we need triple the amount of soda compared to the amount of juice.

Since we are using 4 cups of grape juice, we'll need triple that amount of soda, so we'll have to use 12 cups of soda.