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12 April
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This puzzle has three unrelated parts.
Show your work.
- Luke, Stan, and Barry share a room in a cheap motel, to save money.
The three intend to equally share in the cost.
Luke collects 7 dollars from both Stan and Barry, and adds his own 7 dollars.
When Luke goes to the front desk in the main lobby and hands over the 21
dollars, the clerk observes that he is overpaid by 5.
So the clerk returns 5 singles to Luke.
On his way back to the room, dishonest Luke decides to pocket 2 dollars for
himself, but otherwise returns a single dollar to all.
So all have paid 6 dollars for a total of 18, while Luke keeps an extra 2
dollars for himself, for a total of 20 dollars.
Where is the missing dollar?
- Click on this link to see the second puzzle.
- Click on this link to see the third puzzle.
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