Sachin is younger than Rahul by 9 years. If the ratio of their ages is 7:9, find the age of Sachin  Options
A) 31.5
B) 24.5
C) 24.3
D) 24.9
E) 24.1

Rationale: "if rahul age is x , then sachin age is x - 9 , so ( x - 9 ) / x = 7 / 9 = > 9 x - 81 = 7 x = > 2 x = 81 = > x = 40.5 so sachin age is 40.5 - 9 = 31.5 answer : a"
Answer: A