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Four friends contribute sums of money to a charitable organization in the ratio 2:4:5:7. If the largest amount contributed is $1.40, calculate the total amount contributed by the four people

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  1. Let their amounts of contribution be
    2x , 4x, 5x, and 7x

    7x = 1.4
    x = .2

    so they contributed
    $ 0.40 , 0.80, 1. 00, and 1.40
    for a total of $3.60

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    posted by Reiny

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