help me analyze this puzzle

pinoy

Golden Member
Nov 19, 2000
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3 guys checked out of the motel and gave $10 each to the cashier. the cashier then decided to give them a discount and called the bell boy telling him to give the $5 back. not knowing how to divide the 5 bux to the 3, he then decided to give $1 for each person and keep the $2 left. where did missing $1 go?

10-1=9
10-1=9
10-1=9
_______
27 + 2 = 29

any answer? i don't know the answer also, that's why i posted it!:D
 

Novgrod

Golden Member
Mar 3, 2001
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3 guys checked out of the motel and gave $10 each to the cashier. the cashier then decided to give them a discount and called the bell boy telling him to give the $5 back. not knowing how to divide the 5 bux to the 3, he then decided to give $1 for each person and keep the $2 left. where did missing $1 go?

There is no missing $1.

The Cashier has $30; he gives $5 back. Then he has $25.

The bell boy gives out $3, or $1 + $1 + $1.

He keeps $2. Now by my calculation, 3 + 2 + 25 = 30 :)

What you're doing is adding the amount that the people paid plus the amount the bellboy kept.



 

broon

Diamond Member
Jun 5, 2002
3,660
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You are approaching this wrong with your math. Just look at it as $25 for the room. Each give $10. 3x$10=$30-$5 (change)=$25. Each take $1 and give $2 tip.

So...$30 - $25 = $5 - $3 - $2=0
 

dfi

Golden Member
Apr 20, 2001
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The best is when someone tells me this "puzzle", and then proceeds to explain that this is the reason math is "wrong".

dfi
 

spp

Golden Member
Jul 9, 2001
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i think about it this way.... maybe this is easier ..

since each person pay 9 bucks equivalently, their total is 27 dollars, and that should include the 2 bucks bell boy took (so 27-2=25 is the amount that cashier actually took)
 

Calundronius

Senior member
May 19, 2002
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Originally posted by: dfi
The best is when someone tells me this "puzzle", and then proceeds to explain that this is the reason math is "wrong".

dfi

Let me get this straight...people are trying to convince you that "math" is wrong? As in, it dosen't work? The whole concept? That's even worse than the flat-earth people.
 

Evadman

Administrator Emeritus<br>Elite Member
Feb 18, 2001
30,990
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Prove to me that it is not flat.

(harder than you think)
 

Brutuskend

Lifer
Apr 2, 2001
26,558
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AHH the old Einstein number puzzle.

I'll give YOU the answer if you give ME the 1,000,000 that Einstein said HE would give the person that figured it out!! ;)
 

DaveSimmons

Elite Member
Aug 12, 2001
40,730
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Originally posted by: Evadman
Prove to me that it is not flat.

(harder than you think)
Bugs Bunny already did it for me in the cartoon where he threw a baseball in one direction and it arrived back from the opposite direction -- if the Earth wasn't round the baseball would have sailed off the edge into space. It wasn't a boomerang half-circular path because the baseball had travel stickers from nations all around the globe. QED.