SOLUTION: When 20 boys joined a group of y students the ratio of boys to girls became 5:7 . Write an algebraic expression to represent the number of girls in terms of y.
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Question 841120: When 20 boys joined a group of y students the ratio of boys to girls became 5:7 . Write an algebraic expression to represent the number of girls in terms of y. Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = the number of girls = the original number of boys
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given:
Multiply both sides by
