if the price of a tv is first decreased by 20 % and then increased by 45 % , then the net change in the price will be :
"explanation : solution : let the original price be rs . 100 . new final price = 145 % of ( 80 % of 100 ) = rs . 145 / 100 * 80 / 100 * 100 = rs . 116 . . ' . increase = 16 % answer : d"
subtract(divide(multiply(subtract(const_100, 20), add(const_100, 45)), const_100), const_100)