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26 December, 12:01

At summer camp the ratio of boys to girls is 5:4. If there are 40 boys, how many girls are there

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  1. 26 December, 12:19
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    First set up the fractions to compare.

    5/4 = 40/x, with x being the number of girls when there are 40 boys

    5x = 4*40 = 160 (cross multiplication)

    x = 160/5 = 32 (simple algebra simplification)

    There are 32 girls.
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