The following table shows the caloric values of three types of food in kilocalor

Question

The following table shows the caloric values of three types of food in kilocalories per gram of food:

Food type Carbohydrates Fat Protein
Caloric value 4 kcal1 g 9 kcal1 g 4 kcal1 g

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.
Part A
How many nutrition bars should Alexandra pack?
Express the number of bars numerically.

Explanation / Answer

Each nutrition bar gives,
(50 x 4) + (10 x 9) + (40 x 4)

= 450 kcal of energy

She should pack (3600 / 450) = 8 nutrition bars

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