One cup of kidney beans contains 15 g of protein,1 g of fat,and 42 g of carbohydrate.How many kilocalories,to two significant figures,does this sample contain? (The caloric values are: 4 kcal/g for carbohydrate,9 kcal/g for fat,and 4 kcal/g for protein.Round off the energy value for each food group to the tens place.)

Question

Quizplus · Accepted Answer

To find the total amount of calories in one cup of kidney beans, we need to calculate the calories contributed by carbohydrates, fat, and protein individually and add them up.

Carbohydrates: 42 g x 4 kcal/g = 168 kcal (rounded to tens place = 170 kcal)
Fat: 1 g x 9 kcal/g = 9 kcal
Protein: 15 g x 4 kcal/g = 60 kcal

Total calories = 170 kcal + 9 kcal + 60 kcal = 239 kcal (rounded to tens place = 240 kcal)

Therefore, the best choice is option D.

One Cup of Kidney Beans Contains 15 G of Protein,1