Forfeiture of Shares Questions

A share of $\text{Rs. }10$ was issued at a premium of $\text{Rs. }3$. $\text{Rs. }3$ was payable on application and $\text{Rs. }5$ was payable on allotment (including premium). A shareholder who had applied for $100$ shares was allotted only $50$ shares and due to non-payment of allotment money, his shares were forfeited. In this case, the amount to be debited to Securities Premium A/c on forfeiture of these shares is: