As far as I know, I never mention you "ending up with 5 oranges". I said you will have 5 oranges to spare. Which is true, I believe.
This document is mainly for the purpose of documenting logic, and with the compilation of solutions as a side-effect, so I'd appreciate it if you can point out any logical inaccuracies, if any.
Edit: Ah, I see how the wording can be confusing now. I'll change the wording a bit to make my point clearer.