math

Freshman:Sophmore = 5:4
Sophmore:Juniors = 7:8
Juniors:Seniors = 9:7
The total is 2158, what is the amount of each grade?

So far, I got 35:32:224/9 for Freshman:Sophmore:Seniors

I don't know if I'm correct, or what I'm doing. Can you please give me help and explain? thanks so much

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  1. done. see previous post

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