Question

On a birthday cake, 1/3 of the icing was orange and another 1/3 was white. What fraction of the birthday cake was either orange or white

Answer 1

1/3 of the birthday cake was either orange or white

Answer 2

If you are looking for the orange and white icing together, it would be 2/3. Now, if you are talking about neither of the orange and white icing (another color) It would then be 1/3.
 Hope this helped!