Rana bought 500 shares of HCL at a rate that yielded him 20 % return on a 24%, Rs 350 share. Later on , the company issued a bonus share for every 10 shares held.

Question

When the market price was Rs 480 he sold all the shares and invested the proceeds in buying Rs 300 shares of IBM paying a dividend of 27.5%.
The yield percent on his investment now was 25%. Find Rana's investment and change in his annual income