Question

One recipe for pancakes says to use 11 2 cup of mix to make 7 pancakes. How much mix is needed to make 35 pancakes? HELP PLEASE 20 points

Answer 1

7 1/2 cups

Explanation:

1 1/2 cups x cups

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

7 pancakes 35 pancakes

using cross products

1 1/2 * 35 = 7 * x

change 1 1/2 to an improper fraction (2*1+1)/2 = 3/2

3/2 * 35 = 7x

105/2 = 7x

divide each side by 7

105/2 * 1/7 = x

15/2 =x

change back to a mixed number

2 goes in to 15 7 times with 1 left over

7 1/2 cups