Your portfolio consists of 80 shares of CSH and 30 shares of EJH, which you just bought at $18 and $28 per share, respectively. a. What fraction of your portfolio is invested in CSH ? In EJH? b. If CSH increases to $21 and EJH decreases to $26, 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 $21 and EJH decreases to $26, what is the return on your portfolio? The return on the portfolio is %. (Round to one decimal place.)