YOU SOLD 5000 SHARES OF X COMPANY FOR 20 DOLLARS YOUR BROKER TOLD YOU YOU HAVE TO MAINTAIN 55 % INITIAL MARGIN . MMIS 35 % DIVIDENDS 40 CENTSTRANSACTION COST IS 20DOLLAR EACH.INTEREST 5 % IF PRICE WENT UP TO 22 OR DOWN TO 15 WHAT IS YOUR EQUITY ACTUAL MARGIN MARGIN CALL PRICE RETURN