If A: B=7: 9 and B: C=5: 4, then A: B: C is · ABC26GN2998
Subject: General Aptitude · Chapter: Ratio and Proportion
If $A: B=7: 9$ and $B: C=5: 4$, then $A: B: C$ is
(a)$7: 45: 36$
(b)28 : 36 : 35
(c)35 : 45 : 36
(d)None of these
Answer
Explanation
$A: B=7: 9$ and $B: C=5: 4=\left(5 \times \frac{9}{5}\right):\left(4 \times \frac{9}{5}\right)=9: \frac{36}{5}$. $$\Rightarrow A: B: C=7: 9: \frac{36}{5}=35: 45: 36 .$$
Explanation as extracted from the printed page; notation may be imperfect.
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