SOLUTION: When 18 boys joined a group of y students, the ratio of boys to girls to girls in the group became 4:5. Write an algebraic expression for the number of girls in terms of y?

Question 1170040: When 18 boys joined a group of y students, the ratio of boys to girls to girls in the group became 4:5. Write an algebraic expression for the number of girls in terms of y?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52787) (Show Source): You can put this solution on YOUR website!
.

Unclear.

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Notice that @josgarithmetic in his post solves DIFFERENT problem from that written in your post.

I am absolutely not sure that it is what you want.

I really do not know what you want - it is UNCLEAR from your post.

And I think that in this situation, the correct (the right) formulation should go from the visitor

- - - not from the tutor.

Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
18 boys is joined by a group of x girls and y boys.

Ratio BOYS to GIRLS became .

----------solve this for x, the asked-for number of girls.
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