if the price of a tv is first decreased by 10 % and then increased by 30 % , then the net change in the price will be :
"explanation : solution : let the original price be rs . 100 . new final price = 130 % of ( 10 % of 100 ) = rs . 130 / 100 * 90 / 100 * 100 = rs . 117 . . ' . increase = 17 % answer : b"
subtract(divide(multiply(subtract(const_100, 10), add(const_100, 30)), const_100), const_100)