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

Let Rahul’s age be $x$ years. Then, Sachin’s age = $(x -7)$ years

$\frac{x – 7}{x}$ = $\frac{7}{9}$

9$x$ – 63 = 7$x$

2$x$ = 63

$x$ = 31.5

Hence, Sachin’s age = $(x -7)$ = 24.5 years