# Present ages of David and Balu are in the ratio of 5 : 4 respectively. Three years hence, the ratio of their ages will become 11 : 9 respectively. What is Balu’s present age in years ?

$\par&space;Let&space;the&space;present&space;ages&space;of&space;David&space;and&space;Balu&space;be&space;5x&space;years&space;and&space;4x&space;years&space;respectively.$

$\frac{5x+3}{4x+3}&space;=&space;\frac{11}{9}$

$9(5x+3)&space;=&space;11(4x+3)$

$x&space;=&space;6$

$\par&space;Balu's&space;present&space;age&space;=&space;4x&space;=&space;24&space;years$