arrrgh! My brain!

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    Last post ago over 1 year by Cat50
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    gabby

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        gabby

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        • 2d4818989f1ca7ccfaccc9b2527a6916
        Three guys go to a hotel.  The room is $30
        Each guy pays $10

        The manager tells the bellhop he forgot there was a room special.  The room should only be $25
        He gave the bellhop $5 one dollar bills to return to the guys.
        The bellhop doesn't want to calculate the breakdown so he gives each guy $1 back.

        So... The guys each end up paying $9 each.  $9x3 =$27
        Bellhop kept the extra $2

        $27 + $2 = $29

        Where is the extra dollar?
        8'| 8'|
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        blueday

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          • Flapjack
          Hmmm.

          They paid a total of $30 (3 x $10 each).

          The bellhop took away $5 x $1 bills.  So technically they paid $25.  He gives them $1 each - $25 + $3 = $28 plus he kept $2 makes $30.

          Doing it in "reverse" as such - yes I can see how it is $27 (3x$9) + $2 = $29.  I still can't work it out though doing it in reverse i.e. they paid $9 each and the bellhop kept $2.  Very tricky and thanks for the big brainteaser Gabby.



        • 2d4818989f1ca7ccfaccc9b2527a6916

          Johnny Karp

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          There is no extra dollar but I can't understand why I can't get the same result by calculating it "in reverse" as  Blue says.
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          lakandan

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          Tricky one.  from original $30 down to $25.  But the guys end up paying $9 each for a total of $27.
          $27 payments of the guy less the actual price of $25 equals the $2 taken by the bellhop.  Smart one, that bellhop   

          and Thanks for the analogy, blue 
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          Markotik

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          That's a great headcrusher.
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          mer3801

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          Because you're not counting the 27th dollar as being spent.
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          Sommi

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          gabby wrote:


          So... The guys each end up paying $9 each.  $9x3 =$27
          Bellhop kept the extra $2

          $27 + $2 = $29

          Where is the extra dollar?
          8'| 8'|


          Just some brainless math. They  paid $9 each for room AND bellhop's "tip". So why someone adds $2 tip AGAIN? It's already included in that $9. They should add $1 that everyone got back so $27+$1+$1+$1 = $30. Where is missing $0? 
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          Cat50

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          Good one gabby  . I tried to work it out but i could not. I am anticipating the answer. I just love riddles  .

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