I said 3 hours, and it’s been less than 2. I’m just kidding, really. I know that you would probably get the right answer in <2 minutes, so I wanted you to give other people a chance to see the riddle without seeing the answer. But if your engines are revving, go ahead. 😉
BTW, the formatting on this page is messed up since 2 weeks ago. See ICOT’s post above. If a mod would go back and close the expression, all would be back to normal. This happens from time to time.