a person buys an article at rs . 500 . at what price should he sell the article so as to make a profit of 45 % ?
"cost price = rs . 500 profit = 45 % of 500 = rs . 225 selling price = cost price + profit = 500 + 225 = 725 answer : e"
add(500, multiply(500, divide(45, const_100)))