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29 March, 18:09

Cody notices that for every 2 evergreen trees on the school campus there are 7 other trees. If there are a total of 99 trees on the campus how many of them are not evergreen

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  1. 29 March, 20:04
    0
    77

    Step-by-step explanation:

    For each 2 evergreens there are 7 other trees.

    Add 2 + 7 = 9.

    For each 7 non-evergreens there are 9 trees of all types.

    The ratio of non-evergreens to total trees is 7/9.

    Let x = number of non-evergreens.

    7/9 = x/99

    9x = 7 * 99

    Divide both sides by 9.

    x = 7 * 11

    x = 77
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