Since beginning college, Lisa has put on about thirteen pounds. She is learning in her health science class that excess calories
contribute to weight gain. One recommendation her instructor made for weight loss is to choose foods that have a low percentage of total calories coming from fat. If a 1/2-cup serving of her favorite ice cream has 310 kcal and 20 grams of fat, what percentage of total calories in the ice cream come from fat?a. 5.8% of kcal in this food are from fat.b. 6.5% of kcal in this food are from fat.c. 58% of kcal in this food are from fat.d. 65% of kcal in this food are from fat.
First it is necessary to convert the 20 grams of fat into calories, this we do it by multiplying 20 x 9 . The result is 180 . We multiply by 9 because every gram of fat contains nine calories.
Then we have 180 calories that come from fat and 310 the total calories of the ice cream. So now we proceed to divide 180 by 310 which is 0.58 and multiply it by 100 and we get 58 % as our final result which means that 58% of kcal in this food are from fat.
