Your portfolio consists of 90 shares of CSH and 70 shares of EJH, which you just bought at $20 and $30 per share, respectively. a. What fraction of your portfolio is invested in CSH? In EJH? b. If CSH increases to $25 and EJH decreases to $28, what is the return on your portfolio? a. What fraction of your portfolio is invested in CSH? In EJH? The fraction invested in CSH is% (Round to one decimal place.) The fraction invested in EJH is% (Round to one decimal place.) b. If CSH increases to $25 and EJH decreases to $28, what is the return on your portfolio? The return on the portfolio is%. (Round to one decimal place.)