During the first quarter of 2015, toronto dominion bank (td) stock cost $45 per share, was expected to yield 4% per year in dividends, and had a risk index of 3.0 per share, while cna financial corp. (cna) stock cost $40 per share, was expected to yield 2.5% per year in dividends, and had a risk index of 2.0 per share.† you have up to $25,000 to invest in these stocks, and would like to earn at least $760 in dividends over the course of a year. (assume the dividends to be unchanged for the year.) how many shares (to the nearest tenth of a unit) of each stock should you purchase to meet your requirements and minimize the total risk index for your portfolio?