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31 October, 07:07

Through research scientists found that the body or a 200 lb person consist of 3.2*10 to the nigetive five lbs of zinc. In the bodies on 1500 such people, how much zinc is present?

"Should i divide or add?"

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  1. 31 October, 07:09
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    In 1500 people of 200 lb each, the total weight would be 300000 lb.

    Set up a proportion: 200lb/3.2*10^-5 = 300,000lb/x

    (3.2*10^-5*300,000) / 200 = x

    x = 0.48, I believe
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