a man ’ s wages were decreased by 50 % . again , the reduced wages were increased by 50 % . he has a loss of ?
here , x = - 50 and y = 50 therefore , the net % change in value = ( x + y + xy / 100 ) % = [ - 50 + 50 + ( - 50 x 50 ) / 100 ] % or - 25 % since the sign is negative , there is loss of 25 % answer : b
subtract(const_100, multiply(divide(add(const_100, 50), const_100), 50))