Discussion

Sachin is younger than Rahul by 7 years. If their ages are in the respective ratio of 7 : 9, how old is Sachin?

Answer: C

Let Rahul's age be \(x \) years .

Then, Sachin's age = \((x-7)\) years

\(\therefore \) \(\frac{x - 7}{x}=\frac{7}{9}\)

\(\Rightarrow 9x - 63 = 7x\)

\(\Rightarrow 2x = 63\)

\(\Rightarrow x = 31.5\)

Hence, Sachin's age = \((x-7)\) = 24.5 years

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