a ratio between two numbers is 8 : 9 and their l . c . m . is 432 . the first number is
sol . let the required numbers be 8 x and 9 x . then , their l . c . m . is 72 x . ∴ 72 x = 432 ⇔ x = 6 . hence , the first number is 48 . answer d
multiply(divide(432, multiply(8, 9)), 8)