SSC-CGL & Bank exams maths age

Q.1) Sachin is younger than Rahul by 4 years. If their ages are in the respective ratio of 7:9, how old is Sachin?

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Correct

The ratio of sachin's age and Rahul's age is 7 : 9
So age of Sachin = 7x and Rahul = 8x years.
Sachin is younger than Rahul by 4
∴ 9x - 7x = 4
∴ 2x = 4
∴ x = 2
Sachin's age = 7x = 7(2) = 14years.
ans: (e)

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