the sum of two numbers is 40 and their difference is 4 . the ratio of the numbers is
sol . let the numbers be x and y . then , x + y / x - y = 40 / 4 = 10 ⇔ ( x + y ) = 10 ( x - y ) ⇔ 9 x = 11 y ⇔ x / y = 11 / 9 . answer a
divide(divide(subtract(40, subtract(divide(40, const_2), const_2)), const_2), divide(subtract(divide(40, const_2), const_2), const_2))