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4 March, 15:27

a certain medicine is given in an amount proportional to a patient's body weight supposed patient weighing 104 lb requires 130 milligrams of medicine what is the weight of a patient requires 278. 75 mg of Medicine

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  1. 4 March, 17:27
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    Remark

    This question requires a proportion. We will set the body weight on top and the medicine on the bottom. That way the body weight (x) is in the numerator of one of the ratios.

    Givens

    Body weight1 = BW1 = 104

    Medicine 1 = med1 = 130

    Body Weight 1 = x

    Medicine 2 = 278.74

    Formula

    BW2 / Med2 = BW1 / Med1

    Sub and Solve

    x / 278.75 = 104/130 Calculate the right side

    x / 278.75 = 0.8 Multiply both sides by 278.75

    x = 278.75 * 0.8 = 223

    Conclusion

    The Patient must have weighed 223 pounds.
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