Beach Day by Rodger Bliss
December 2021
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40 lb. Stone

A farmer had a 40 pound stone that he used to weigh 40 pounds of feed with, you know, he had a balanced scale, you put the stone on one side and the feed on the other side, and when it balanced, he knew he had 40 pounds of feed on the one side. A neighbor of his, Frank Staples, I think, borrows the stone and when he returns it, he says I’m terribly sorry, I dropped the stone and it broke into four pieces. The farmer says don’t worry, you actually did me a favor and he explains that the pieces of the broken stone could now be used to weigh any item, assuming those items were at one pound increments from one pound to 40 pounds. So, if he wants to weigh something that’s one pound, two pounds, three pounds, four pounds, five pounds, he can do it with those four stones, four pieces and the balance scale. Here’s the question: What are the weights of the four pieces of stone.

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4 guesses to 40 lb. Stone


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  • Rool

    It must have been quite a coincidence if the 4 pieces were:

    1, 3, 9, and 27 pounds each…

  • Rool

    Deja-vu for some reason…

    Hmmmm…

    Oh FOUR STONES!!!

  • Dude

    Rool, you nailed it.
    By combining the four stones weighing 1,3, 9 and 27 lbs. each, you can weigh any even amount between 1 and 40 lbs. simply by put a combination on both sides of the scale.
    Great job, Rool!!!
    You’re today’s winner!

  • Dude

    Oh, and sorry for the repeat.