# Chapter 3 - Review Exercises - Page 303: 101

See below.

#### Work Step by Step

According to the exercise: $\frac{x}{y}=\frac{12.5}{20}=\frac{5}{8}$. Hence if $y=5$, then $x=5\cdot\frac{5}{8}=\frac{25}{8}$. If $y=25$, then $x=25\cdot\frac{5}{8}=\frac{125}{8}$.

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