$A$ company declared a semi-annual dividend of $7 \frac{1}{2} \%$. Find out the annual dividend of Chetan,who owns $1250$ shares of the company,each having a par value of $Rs. 10$. (in $Rs.$)

Sonu invested $10 \%$ more than Mona. Mona invested $10 \%$ less than Raghu. If the total sum of their investment is $Rs. 5780$,how much amount did Raghu invest? (in $Rs.$)

Find the income on $12\%$ stock of $Rs.\, 60000$ purchased at $Rs.\, 110$. (in $Rs.$)

Find the investment required to purchase $Rs.\, 125000$ of $8 \%$ stock at $92$. (in $Rs.$)

Ram invested $Rs.\, 88008$ in $9 \frac{1}{2} \%$ stock at $112$ (Brokerage: $Rs.\, 2$). Find out the annual income of Ram from this investment (in $Rs.$).

$12500$ shares, of par value $Rs.\, 20$ each, are purchased from Ram by Mohan at a price of $Rs.\, 25$ each. Find out the amount required to purchase the shares. If Mohan further sells the shares at a premium of $Rs.\, 11$ each, then find out his gain in the transaction. (in $Rs.$)