7th Grade Challenging Math

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7-24)   Answer

           Black shoes: 65 pairs
             Brown shoes: 39 pairs

Solution:
The portion of black shoes is 5/(5 + 3) = 5/8
The portion of brown shoes is 3/(5 + 3) = 3/8
Black shoes = 104 x 5/8 = 65 pairs
Brown shoes = 104 x 3/8 = 39 pairs