Sachin invests ₹8500 in 10%, ₹ 100 shares at ₹ 170 . He sells the shares when the price of each share rises by ₹30. He invests the proceeds in 12%₹100 shares at ₹125. Find:
(i) the sale proceeds.
(ii) the number of ₹ 125 shares he buys.
(iii) the change in his annual income.