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Mathematics, 31.07.2019 23:00 jilliangillespie
When 18 boys joined a group of why students, the ratio of boys to girls in the group became 4 : 5. write an algebraic expression for the number of girls in terms of y.
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When 18 boys joined a group of why students, the ratio of boys to girls in the group became 4 : 5....
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