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27 October, 13:09

90 juniors took different SAT-II tests. 40% more students took the Chemistry test than took the History test, and 50% more students took the Math test than took the Chemistry test. How many students took each test?

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  1. 27 October, 15:47
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    Step-by-step explanation:

    4.5x=90

    x=20 history

    28 chemistry

    42 math

    They add to 90.

    History test=x

    Chemistry test=1.4x

    Math test = (1.5) (1.4) = 2.1x

    They add to 90
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