OK, I know it’s an old one, but I love it…..So, there is a frog called Jason. Jason has been a very silly frog and fallen into a well that is 12 feet deep. Now, as you might expect, Jason is eager to get out, but can only jump 3 feet high. Not only that, the walls of well are covered in slime and so he slips down 2 feet each time he lands. So, every jump takes Jason 3 ft up but 2 ft back. How many jumps will Jason have to make to get out of the 12ft well?
Before you ask, Jason does not have access to any springs, ‘Space Hoppers’ (also known as skippyballs, kangaroo balls, bouncers, hippity hips, hop balls, and hoppity hops), or crampons.