if price of t . v set is reduced by 22 % , then its sale increases by 86 % , find net effect on sale value
"- a + b + ( ( - a ) ( b ) / 100 ) = - 22 + 86 + ( - 22 * 86 ) / 100 = - 22 + 86 - 19 = 45 answer : b"
multiply(subtract(multiply(divide(subtract(const_100, 22), const_100), divide(add(const_100, 86), const_100)), const_1), const_100)