A slice of pizza contains 29 g of carbohydrate, 13 g of protein and an unknown amount of fat. If the pizza contains 280 kcal, how many grams of fat are present? (The caloric values for foods are 4.0 kcal/g for
Carbohydrate, 4.0 kcal/g for protein, and 9.0 kcal/g for fat.)Round off the answer for each food type to the tens
Place.
A)12 g
B)250 g
C)55 g
D)10. g
E)25 g

Question

Quizplus · Accepted Answer

First, calculate the calories from carbohydrates and protein: (29 g x 4.0 kcal/g) + (13 g x 4.0 kcal/g) = 116 kcal + 52 kcal = 168 kcal. Subtract this from the total calories to find the calories from fat: 280 kcal - 168 kcal = 112 kcal. Then, divide by the caloric value of fat: 112 kcal / 9.0 kcal/g = 12.44 g, which rounds to 12 g.

A Slice of Pizza Contains 29 G of Carbohydrate, 13