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## More Random Facts that you really don't need....

Posted on: January 17, 2008 2:28 pm

Well, as promised, the thrilling continuation of "Random facts that you really never need to know". Today we're going to learn why barns are red, and more importantly, how to win money by disproving math... Oh ya, and a little hockey...

Why are barns red?

How to win Money at the bar by disproving math...

First off, this is a little tricky but it's genuis... First you need to wait until your friends get nice and tipsy (it works sober, but it's more fun when they're drunk, oh and they're more likely to wager money) Next, bet your friends that you can ask them a really simple math question that they won't only not be able to answer, but they won't even be able to explain... Here's the question in simple word problem form...

The set-up-  3 guys are driving down an old highway really late one night, when all of a sudden their car starts making a funny sound, the sound gets worse & worse until the engine sputters to a hault. The 3 guys get out of the car and look around, luckily they see a little motel up the way. it's almost 4am and everyone is tired so they decide to get some sleep & get the car fixed in the morning. So they walk to the motel and go inside.

The story- When they get inside they tell the clerk what happened and they ask "how much for the 3 of us to split a room for the night?" the clerk responds " well guys, a room is \$30 per night... since there's 3 of you sharing, it'll be \$10 per person"  So each of the 3 guys pulls out a \$10 bill and gives it to the clerk, giving the clerk a total of \$30, and they go up to their room. Just after this, the motel owner comes out & asks the clerk "hey, how much did you just charge those guys?" the clerk responds  "\$30, ten dollars a piece" The owner says, you overcharged them... it was only \$25 dollars tonight, here take \$5 dollars and go give them their money back" The clerk says ok and takes 5, one dollar bills upstairs. As he's walking he thinks, "how am I going to split \$5 among 3 guys? I'll just pocket \$2 and tell them the room was cheaper. So he pockets \$2 & knocks on the door. He explains what had happened and gives each guy \$1 back, says goodnight and walks away.

The problem- So the room was orignally \$30 correct? Each guy originally paid \$10 a piece correct? Each guy got a \$1 refund so after getting one dollar back each. Each guy paid \$9 a piece correct? Well 9 + 9 + 9 = 27  (or 9 x 3 = 27) the clerk only put \$2 in his pocket right? That only adds up to \$29 dollars... Where did the last dollar go?

The next problem - Getting your friends to actually pay you after they sit there dumbfounded for 10 minutes...

* If you work the problem a different way, you can make it work out, but thats not the point, so be sure to say the story accurately. When said correctly It makes the apperance of a dollar completely vanishing. I can explain the phenomanon but I'll see if any of you can first? Tark, our resident genuis, can you field this one?

On to hockey -

The Wild should of won last night, and  I hate Jerome Ignilia more then any player in the NHL. But the Wild are all alone in first place so I can't complain. Go Wild!!

Hope you enjoyed todays post...

Tomorrows topic:  TBD ( I don't know what kind of mood 'll be in yet)

Category: General

Since: Dec 5, 2006
Posted on: January 17, 2008 7:25 pm

## More Random Facts that you really don't need....

I feel like such an idiot.

Since: Oct 1, 2007
Posted on: January 17, 2008 4:45 pm

## More Random Facts that you really don't need....

Good job steal. So basically the guys did pay 9 each, =27, but the clerk stole 2. therefore 27-2=25. Now its so much clearer! Your right Tark that guy is a jerk!

Since: Dec 5, 2006
Posted on: January 17, 2008 4:15 pm

## More Random Facts that you really don't need....

stealthunder,
You made it clearer than anyone.  Thank you.

Since: Sep 28, 2006
Posted on: January 17, 2008 4:10 pm

## More Random Facts that you really don't need....

The problem is that you shouldn't be adding the \$2 to the \$27 to get up to \$30, you should be subtracting it to get down to \$25...

You can't make it any clearer than that...

Since: Sep 28, 2006
Posted on: January 17, 2008 4:06 pm

## More Random Facts that you really don't need....

Hey, the refs tried to help the Wild out as much as they could, it just wasn't happening...  lol

And how did you like that slapshot from Dion in the shootout that hit Backstrom in the shoulder and almost bowled him over...

Iggy rules!

Since: Dec 5, 2006
Posted on: January 17, 2008 4:06 pm

## More Random Facts that you really don't need....

I don't know, nyfan, I like your way of explaining it a little better than mine.  I got a little too technical with it.

Since: Oct 1, 2007
Posted on: January 17, 2008 3:52 pm

## More Random Facts that you really don't need....

AHH, tark you beat me to it by 6 minutes. But on my honor as a gentleman i didn't see your post before i started mine. But you did do a better job of explaining it.

Since: Oct 1, 2007
Posted on: January 17, 2008 3:49 pm

## More Random Facts that you really don't need....

Ok, so I might sound like a complete tard here, but I will take a shot at explaining it anyway. First the way to explain it so that is adds to 30. Don’t break it into 3 different guys just do it as one bill. The three guys pay 30 dollars total. Now the only way to explain it that I came up with, that will make the total 30 is if the guy gives them the full five back, so that they will have paid 25 total, and then they give the guy the 2, and they have the extra 3 left over, giving the guys \$28 and the clerk \$2, totaling \$30. I know that was a cluster #\$@ but that’s the best I can do.
The phenomenon I think comes into play when you divide by three. Because the lost bill comes from the fact that 28 divided by 3 = 3.33. So you lose that \$.33 for each person and that equals the missing \$1.
Am I right?

Since: Dec 5, 2006
Posted on: January 17, 2008 3:43 pm

## More Random Facts that you really don't need....

That's a great problem, se7en, but there is a "solution."  I'll do a little bit of math to explain why this is.

So, the original equation was 3*10 - 5 = 25
And when you go back to do it, you only get 29, because 3*9 + 2 = 29
The problem is, that is incorrect reasoning mathematically.  They each paid \$10, and you just can't go back and say they put \$9 together after the fact.

Alright, let's go back to freshman or sophomore year of high school for a second.

Let's let "x" equal the amount of money each person paid.
So from the problem, we have 3*x  = 30
That means x = 10
So far, we are fine.

But now we have to go back because each was given \$1 back, and the clerk kept \$2 for himself (he's a jerk by the way for doing that).
Still using x as how much each person payed, we have to go back and take away 1 from how much each payed.
So it is now 3*(x-1) - 2 = 25
We subtract the 2 because that's what the clerk took.
Now, we multiply the 3 through the x - 1:
3x - 3 - 2 = 25
This equals 3x - 5 = 25
Which equals 3x = 30
x = 10

If we did it the way the problem suggests, the equation would have been
3x - 2 = 29
x = 9
This is mathematically correct, but the reasoning is completely wrong.

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