Alexandra decides to climb Mt. Krumpett, which is 5000 m high. She determines that this will require a total of 3600 kcal of energy for the trip. For her food supply, she decides to take nutrition bars. The label states that each bar contains 50 g of carbohydrates, 10 g of fat, and 40 g of protein. How many Nutrition Bars does she need?

The answer to your question is 8 bars

Explanation:

Data

Total energy = 3600 kcal

Content of a bar     50 g Carbohydrates, 10 g of fat and 40g of proteins

amount of energy of Fats          8.8 kcal/g

amount of energy of Proteins and carbohydrates  4 kcal/g

Process

1.- Calculate the energy of each nutrient in the bar

50 g x 4 kcal/g = 200 kcal

10 g x 8.8 kcal/g = 88 kcal

40 g x 4 kcal/g = 160 kcal

Total energy in a bar = 200 + 88 + 160

                                   = 448 kcal

2.- Calculate the number of bars needed

     # of bars = 3600 kcal/448 kcal

     # of bars = 8 bars

23.5

23.5

47.0