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# A baby weighs 7 1/8 pounds then after four months it now weighs 15 2/3, how much did the baby gain?

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A baby weighs 7 1/8 pounds then after four months it now weighs 15  2/3, how much did the baby gain?

Guest Apr 11, 2017
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current weight - old weight = gained weight

$$15\frac23-7\frac18=g \\~\\ = 15\frac{2*8}{3*8}-7\frac{1*3}{8*3} \\~\\ = 15\frac{16}{24}-7\frac{3}{24} \\~\\ = 8\frac{13}{24}\text{ pounds}$$

hectictar  Apr 11, 2017

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