Question

A 225 g sample of french fries supplies 460 kilocalories of energy. 65% of those calories come from fat, which supplies 9 kilocalories of energy per gram. How many grams of fat are in the french fries?

Answer 1

33 g

Step-by-step explanation:

A 225 g sample of french fries supplies 460 kilocalories of energy. 65% (0.65) of those calories come from fat. The kilocalories coming from fat are:

460 kcal × 0.65 = 299 kcal

9 kilocalories of energy are supplied per gram of fat. The grams of fat that supply 299 kcal are:

299 kcal × (1 g fat/ 9 kcal) = 33 g

Answer 2

The french fries gives 460 kilocalories and 65% of those calories come from fat. Then, calorie that comes from fat would be: 65% * 460 kcal= 299 kcal

Fat gives energy about 9kcal/gram. Then, the total mass of fat in the french fries would be: 299 kcal/ (9kcal/g)= 33.22 grams