kamal ' s salary was decreased by 50 % and subsequently increased by 30 % . how much percent does he lose ?
explanation : solution : let original salary = rs . 100 . new final salary = 130 % of ( 50 % of rs . 100 ) = rs . ( 130 / 100 * 50 / 100 * 100 ) = rs . 65 . . ' . decrease = 35 % answer : d
multiply(subtract(const_1, multiply(divide(50, const_100), add(divide(30, const_100), const_1))), const_100)