Solution :

let   ( Age = x )    Then ,

Now  :  for  Maryam :  x + 7    Years  ,and for Ahmad :  x   Years  .

Then after two years : for Maryam : x + 9  Years , and for Ahmad :  x + 2 Years  .

So,after two years

                            x + 2 = ½ ( x + 9 )

                            2 x + 4 = x + 9 ,               Multiplied By 2 ,

                            2 x - x = 9 - 4

                                   x = 5         #

So, Now Maryam Age Is = 12 Years, After Two Years = 14

And , Ahmad Age Is = 5 Years , After Two Years = 7

End Of Solution.