Consider a portfolio of 300 shares of 3M (MMM), 500 shares of Best Buy (BBY), 400 shares of Coca Cola Company (KO) and 100 shares of Intuitive Surgical Inc (ISRG). On January 31, the prices of these stocks were $151, $28, $43 and $541 respectively. Suppose the returns on the four stocks during the month of February are 2.2%, 2.6%, 1.4% and 4.5%. What is the return on the portfolio? Suppose that none of the stocks paid a dividend during the month of February. What are the weights of the stocks in the portfolio on February 29?