Aaron is 5 years younger than Aaryan. four years later if  Aaryan will be twice as old as Aaron, then their present ages are

$\text{4}\text{years}\text{later:Aryan}\text{age=2}\left(\text{Aaron}\text{}\text{age}\right)$

$x+9=2\left(x+4\right)$

$x+9=2x+8$

$9-8=2x-x$

$x=1$

$\therefore$ Present age of Aaron$=x=1$

$\text{Aaryan}=x+5=1+5=6$

Their ages are$6,1$