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You collect a total of $75 in donations from three people. The three donations are in the ratio 4 : 4 : 7.

Guest Aug 21, 2017
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4/[4+4+7] =4/15 x 70 =$20 one donation

Same for ratio of 4 -The second donation =$20

7/[4+4+7] = 7/15 x 70 =$35 the third donation.

Guest Aug 21, 2017
edited by Guest  Aug 21, 2017

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