Discussion
Rohit is younger than Rahul by 7 years. If the ratio of their ages is 7:9, find the age of Rohit
Answer: D
lets Rahul's age is \(x\) years
Then Rohit's age \(=(x-7)\) years
so, \(\frac{(x-7)}{x}=\frac{7}{9}\)
\(\Rightarrow \) \(9x-63=7x\)
\(\Rightarrow\) \(2x=63\)
\(\Rightarrow\) \(x=31.5\)
\(\therefore \) Rohit's age \(31.5-7=24.5\) years
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