Simple? math question...
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- 16 Responses
- monospaced0
Both technikiller and his father-in-law must be idiots.
- elpaso0
i think he was testing you..
i give it two weeks before he intervenes in your relationship and breaks you two up cause you can figure out arithmetic riddles on the spot.
shame on you
you threw it all away
- Tark0
Does your wife make you solve math problems for sex?
- That's not so bad. Most wives pose problems with no solution at all.Witt
- So I've heard.Witt
- haha you're right.Tark
- Indeed true. It's a trap.TheBlueOne
- PonyBoy0
the 30 bux was gone... he got five bux back...
all he had was five bux... he kept one (4 left), he gave one to the other two guys(3, 2 left)... and 2 to the bellboy that knobbed him in the elevator (0 left)... I don't see what's so hard to understand about this.
- Witt0
Right asnwer is: watch out for father-in-law riddles.
- Tark0
can you please paypal me $3 for reading all this?
It was to my understanding when signing up that there was to be no math.
- Witt0
If they have $3 and the room sucks, what happened to the missing $27?
- PonyBoy0
4
- KwesiJ0
a fundemental issue in modern mathematics is that no one knows what they're talking about
- jonatne0
- haha, thanks.technikiller
- google's also good for email, not just searchjonatne
- HAHAHAHAHA
good old wiki wikie-pill
- Bryce0
There is no missing money.
Each guy is out $9, so $9 x 3 = $27
Each guy still has $1 in his pocket ($1 x 3 = $3)
$27 + $3 = $30The $2 in the bell boy's pocket is part of the $27 that the men paid. $25 of it went to the hotel, $2 to the bell boy, and the remaining $3 went back to the customers.
$25 + $2 + $3 = $30
- jonatne0
The $3 amount that has been returned to the guests is a reduction in the amount that the guests paid, so it should be subtracted from the total. The bellhop returned $3 ($1 each), making their total payment $27 (mathematically, $30 - $3). Note that the $3 is subtracted from the total. If the bellhop then changed his mind and returned the additional $2 to the guests, it would also be subtracted from the total. The mistake is made in trying to add this $2 instead of subtracting it. Simple math demonstrates what readers intuitively sense, that there is no missing money. The sum of their payments is $25 in the till, $2 in the bellhop's pocket (totaling $27), plus the $3 in change that the guests now have, which brings the total up to $30.
The incorrect solution is: ($10 - $1) x 3 + $2 = $29. This equation is not meaningful: the number 29 is not significant to the problem, i.e. there is no "missing $1".
The correct solution is: ($10 - $1) x 3 - $2 = $25. In this case the solution is the bill amount, which is also the amount of money left in the till.
In other words, $27 is the amount that the guests have paid. Of that $27, $25 went into the till and $2 went to the bellhop. The other $3 is returned to the guests.
- ismith0
The 3 x $9 is wrong.
- They each paid (30-5)/3ismith
- how so?
technikiller - Err, whops. See what jonatne said.ismith
- *whoopsismith
- Llyod0
if I answer this correctly will I be hired by Microsoft?
- technikiller
So my father in law asked me this question, and I have no idea the explanation:
3 guys decide to split the cost of a $30 hotel room, so they each throw in $10.
After they pay and go to the room, it sucks, so one guy goes down and asked for some money back. He gets $5 back. He can't easily split $5 three ways, so he gives them each back $1 (including himself) and the other $2 to the bell boy. So each guy paid $9 essentially.
3 x $9 = 27
$27 + $2 = $29
What happened to the other dollar?
Am I missing something here?