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25 June, 16:33

Alexandra decides to climb Mt. Krumpett, which is 5000 m high. She determines that this will require a total of 2700 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.

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  1. 25 June, 19:22
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    The calories per gram of each substance are:

    Protein: 4 calories / gram

    Carbohydrates: 4 calories / gram

    Fat: 9 calories / gram

    So, one bar contains:

    50 * 4 + 10 * 9 + 40 * 4

    450 calories

    If she were to eat only these bars, she will need:

    2,700 / 450

    = 6 nutrition bars for her climb
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