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The ratio of Seth's height to Jack's height is 3:4 if Jack is 15 inches taller than Seth, what is Seth height.

Respuesta :

Set up proportion 3/4 = S/S+15
4s = 3s + 45
subtract 3s from both sides
s=45

You can check by taking Seth's height of 45 over Jack's height of 60 (45+15).
And reduce the fraction to 3/4 or a ratio of 3:4.