So the numbers are x and y x:y=5:4 x/y=5/4 this means that x is worth 5 units and y is worth 4 units so x:y=5:4, therefore it can be represented by x:y=5z:4z we know that they add to 720 720=5z+4z add like terms 720=9z divide by 9 80=z multiply by 4 320
