Let there ages by a, ar, ar^2 (Ascending order)

Let the money to be divided is x Rs

The three equations given in the problem are

(a+3)/(ar^2+3)=(1/2)                                        ------(i)

x*(a+3)/(a+ar+ar^2+9)=105                              ------(ii)

x*(ar+3)/(a+ar+ar^2+9)-x*ar/(a+ar+ar^2)=15     ------(iii)

 

Try solving these set of equation. I have tried a bit but i am unable to solve till now. Do you have answer of this problem