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Problems on Ages - General Aptitude

Q1:

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

A 16 years

B 18 years

C 28 years

D 24.5 years

E None of these

ANS:D - 24.5 years

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.