Your portfolio consists of 90 shares of CSH and 45 shares of EJH, which you just bought at $18 and $29 per share, respectively, a. What fraction of your portfolio is invested in CSH? In EJH? b. If CSH increases to $19 and EJH decreases to $25, 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 $19 and EJH decreases to $25, what is the return on your portfolio? The return on the portfolio is % (Round to one decimal place)