ABC26GN3004 · Ratio and Proportion

Subject: General Aptitude · Chapter: Ratio and Proportion · Exam: 2009 · Marks: · Difficulty:

If $8 a=9 b$ then the ratio of $\frac{a}{9}$ to $\frac{b}{8}$ is
(a)1 : 1
(b)1 : 2
(c)2 : 1
(d)64 : 81
(e)81 : 64
Answer
Answer (as printed): A
Explanation
$8 a=9 b \Rightarrow a=\frac{9}{8} b . \quad \therefore \frac{a}{9}: \frac{b}{8}=\frac{\left(\frac{9}{8} b\right)}{9}: \frac{b}{8}=\frac{b}{8}: \frac{b}{8}=1: 1$.

Explanation as extracted from the printed page; notation may be imperfect.

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