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17 June, 15:54

The ratio of boys to girls at a school program is 3 to 7. how many girls and present if 690 students attend the program?

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  1. 17 June, 16:42
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    Total ratio = 3+7 = 10

    Value of 1 ratio unit = 690/10 = 69

    number of girls = 69*7 = 483
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