a person buys an article at rs . 350 . at what price should he sell the article so as to make a profit of 30 % ?
"cost price = rs . 350 profit = 30 % of 350 = rs . 105 selling price = cost price + profit = 350 + 105 = 455 answer : a"
add(350, multiply(350, divide(30, const_100)))