a man bought 20 shares of rs . 50 at 5 discount , the rate of dividend being 4 % . the rate of interest obtained is
"shares = 20 shares 50 at 5 discount rate divident 4 % req = = = > 5.28 % answer b"
divide(multiply(multiply(20, 50), divide(4, const_100)), multiply(20, subtract(50, 5)))