Vivek invests ₹ 4500 in 8 % , ₹ 10 shares at ₹ 15. He sells the shares when the price rise to 30 and invests the proceeds in 12 %, ₹ 100 shares at ₹ 125.
Calculate (i) the sale proceeds
(ii) the number of ₹ 125 shares he buys
(iii) the change in his annual income from dividend