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

16 years
18 years
28 years
24.5 years
None of these

Correct Answer: 24.5 years

Explanation:

Let Rahul's age be x years.

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

∴	x - 7	=	7
	x		9

⟹ 9x - 63 = 7x

⟹ 2x = 63

⟹ x = 31.5

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

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