Question

Explain how to find the number of grams of fat in 2.5 cups of corn if there are 7.87 grams of fat in 1 cup of corn.

Answer 1

We  have to realize a simple rule of three  

if 1 cup of corn------------------------- > 7.87 g of fat
2.5 cup--------------------------- X


X=2.5*7.87=19.675 gr

the answer is 19.675 grams of fat in 2.5 cup of corn

Answer 2

Sample Response: Multiply 25 by 787 to get 19675. Then add the number of decimal places in the factors to find the number of decimal places in the answer. There are 19.675 grams of fat in 2.5 cups of corn. Estimate to check the answer using 3 x 8 to get 24.