A Recipe and Fractions

by Dopee.E<3
(here...)

You are at a grocery store to buy ingredients for your cupcakes. The recipe requires 4 2/8 a cup of rising flour to make 28 cupcakes. You want to make 112 cupcakes. How much rising flour do you need?

Solution

How much more is 112 compared to 28?

To find out divide 112 by 28.


112/28 = 4

So you need 4 times 4 2/8


4 2/8 = 4 1/4

4 1/4 means 4 cups and 1/4 of a cup.

4 times 4 = 16

4 times 1/4 = 1


16 + 1 = 17

Therefore, for 112 cupcakes, you need 17 cups of rising flour