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

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 Answer: Option D 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.