A benchmark market value index is comprised of three stocks. Yesterday the three stocks were priced at $16, $26, and $55. The number of outstanding shares for each is 750,000 shares, 650,000 shares,...

A benchmark market value index is comprised of three stocks. Yesterday the three stocks were priced at $16, $26, and $55. The number of outstanding shares for each is 750,000 shares, 650,000 shares, and 350,000 shares, respectively. If the stock prices changed to $20, $24, and $57 today respectively, what is the 1-day rate of return on the index?