a person buys an article at rs . 550 . at what price should he sell the article so as to make a profit of 30 % ?
"cost price = rs . 550 profit = 30 % of 550 = rs . 165 selling price = cost price + profit = 550 + 165 = 715 answer : b"
add(550, multiply(550, divide(30, const_100)))