On Friday I posted this puzzle. You have a straight-sided glass of orange juice that is filled to the brim like this…..
If you have not tried to solve it, have a go now. For everyone else the answer is after the break.
You simply drink until the level of the liquid runs from the lip of the glass to the top of the opposite bottom rim, like this:
I have produced an ebook containing 101 of the previous Friday Puzzles! It is called PUZZLED and is available for the Kindle (UK here and USA here) and on the iBookstore (UK here in the USA here). You can try 101 of the puzzles for free here.