a man gains 60 % by selling an article for a certain price . if he sells it at double the price , the percentage of profit will be .
"explanation : let the c . p . = x , then s . p . = ( 160 / 100 ) x = 8 x / 5 new s . p . = 2 ( 8 x / 5 ) = 16 x / 5 profit = 16 x / 5 - x = 16 x / 5 profit % = ( profit / c . p . ) * 100 = > ( 16 x / 5 ) * ( 1 / x ) * 100 = 320 % option b"
add(multiply(subtract(multiply(add(const_1, divide(60, const_100)), const_2), const_1), const_100), const_100)