A man invested Rs. 1552 in a stock at 97 to obtain an income of Rs. 128. The dividend from the stock is:

$$\eqalign{ & {\text{By}}\,{\text{investing}}\,{\text{Rs}}{\text{.}}\,{\text{1552,}} \cr & {\text{income}} = Rs.\,128. \cr & {\text{By}}\,{\text{investing}}\,Rs.\,97, \cr & {\text{income}} = Rs.\,\left( {\frac{{128}}{{1552}} \times 97} \right) \cr & = Rs.\,8 \cr & \therefore {\text{Dividend}} = 8\% \cr} $$