A Puzzle for your Friday
Jul. 28th, 2006 03:22 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
c9Three people check into a hotel. They pay $300 to the manager and go to their room.
The manager suddenly remembers that the room rate is $250 and gives $50 to the bellboy to return to the people.
On the way to the room the bellboy reasons that $50 would be difficult to share among three people so he pockets $20 and gives $10 to each person.
Now each person paid $100 and got back $10. So they paid $90 each, totalling $270. The bellboy has $20, totalling $290.
Where is the missing $10?
The manager suddenly remembers that the room rate is $250 and gives $50 to the bellboy to return to the people.
On the way to the room the bellboy reasons that $50 would be difficult to share among three people so he pockets $20 and gives $10 to each person.
Now each person paid $100 and got back $10. So they paid $90 each, totalling $270. The bellboy has $20, totalling $290.
Where is the missing $10?
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no subject
Date: 2006-07-28 08:30 pm (UTC)You can screen this if you want :)
no subject
Date: 2006-07-28 08:32 pm (UTC)no subject
Date: 2006-07-28 08:37 pm (UTC)I remember this one from awhile ago, and knew the trick was some add/subtract misunderstanding at some point. took me a second.
no subject
Date: 2006-07-28 08:41 pm (UTC)no subject
Date: 2006-07-28 08:42 pm (UTC)no subject
Date: 2006-07-28 08:45 pm (UTC)no subject
Date: 2006-07-28 08:50 pm (UTC)no subject
Date: 2006-07-28 08:50 pm (UTC)no subject
Date: 2006-07-28 09:58 pm (UTC)no subject
Date: 2006-07-28 10:02 pm (UTC)$250 to pay for hotel + $30 for the "refund" + $20 for the bell boy = $300
no subject
Date: 2006-07-28 11:37 pm (UTC)there IS no missing money.
the men paid $270 total. $250 to the manager, and $20 to the bellboy. the fact that they also originally paid an extra $30 and then got it back again is entirely irrelevant.
no subject
Date: 2006-07-29 07:40 pm (UTC)(lol)
no subject
Date: 2006-07-29 08:13 pm (UTC)i've been waiting for that for a whole day!
no subject
Date: 2006-07-29 11:15 pm (UTC)