If P is 30% more than Q, and R is 25% more than P, then what is Q : R?

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Accepted Answer

1. Let $Q=1$. Then $P$ is 30% more, so $P=1.30=\frac{13}{10}$. 
2. $R$ is 25% more than $P$, so $R=\frac{5}{4}P=\frac{5}{4}\cdot\frac{13}{10}=\frac{13}{8}$. 
3. So $Q:R=1:\frac{13}{8}=8:13$.

FINAL_ANSWER: b

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