ACT 2009 April(66F) Math Question 8 Explanation - ACT Helper

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2009 April(66F) Math Question 8
Ratios, Proportions, Percentages, Fractions
- Proportions & Ratios
Choice J
$$\frac{8}{12}=\frac{10}{r}$$ $$8r=120$$ $$r=15$$
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