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30 June, 16:15

The number of kilograms of water in a human body varies directly as the mass of the body. An 84-kg person contains 56 kg of water. How many kilograms of water are in a 72-kg person?

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  1. 30 June, 18:02
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    The answer is 48 kg of water

    Step-by-step explanation:

    If kg of water varies directly with kg of human body

    84 kg p = 56 kg w

    72 kg p = ? kg w

    If we cross multiply, we will have

    ? 84 = 56*72

    ? 84 = 4032

    Divide both side by 84 to get the value of the unknown?

    ? = 4032/84

    ? = 48 kg of water
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