find the number of shares that can be bought for rs . 8200 if the market value is rs . 20 each with brokerage being 2.8 % .
"explanation : cost of each share = ( 20 + 2.8 % of 20 ) = rs . 20.56 therefore , number of shares = 8200 / 20.56 = 398.8 answer : c"
floor(divide(8200, add(20, divide(2.8, const_100))))