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