a person buys an article at rs . 500 . at what price should he sell the article so as to make a profit of 25 % ?
"cost price = rs . 500 profit = 25 % of 500 = rs . 125 selling price = cost price + profit = 500 + 125 = 625 answer : c"
add(500, multiply(500, divide(25, const_100)))