Question

A recipe for 8 pancakes needs the following:

1 1/4 cups of milk
1 1/2 cups of flour
1 egg

Maria has these ingredients.

1 quart of milk
8 cups of flour
12 eggs

How many more cups of milk does Maria need to make 40 pancakes in total?

Answer 1

2 1/4 cups

Explanation:

the first step is to determine how many cups would be needed for 1 pancake

1 1/4 ÷ 8

5/4 x 1/8 = 5/32 cups

the second step is to determine how many cups would be needed for 40 pancakes

5/32 x 40 = 25/4 = 6 1/4

The next step is to convert quart to cups

1 quart = 4 cups

So Maria has 4 cups of milk.

the cups she needs more = 6 1/4 - 4 = 2 1/4 cups