a person buys an article at rs . 620 . at what price should he sell the article so as to make a profit of 25 % ?
"cost price = rs . 620 profit = 25 % of 620 = rs . 155 selling price = cost price + profit = 620 + 155 = 775 answer : c"
add(620, multiply(620, divide(25, const_100)))