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      03-05-2010, 10:57 PM   #1
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Math is broken

So I was told this today at the gym.

Three guys walk into a hotel and tell the manager they need a room. Each person hands the manager $10. The manager says, "Sorry, the room is $25 / night." One of the men says, "that's fine, give us each back $1 and keep $2 as a tip."

How much did each of the three men spend?

How much was given to the manager for a tip?

Do the math...anyone notice a problem?
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      03-05-2010, 11:16 PM   #2
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Total 30 dollars in the beginning.
Each person gets one back so the manager has 27 dollars there.
Since they can't split the last 2 evenly amongst the three men the manager keeps the 2 dollars.

The manager gets $2 and the men spent $27.

Where did the last dollar go? is the problem
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      03-05-2010, 11:21 PM   #3
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Quote:
Originally Posted by 3lusive View Post
Total 30 dollars in the beginning.
Each person gets one back so the manager has 27 dollars there.
Since they can't split the last 2 evenly amongst the three men the manager keeps the 2 dollars.

The manager gets $2 and the men spent $27.

Where did the last dollar go? is the problem
Quicker than I got it!

$30 with the manager...$3 go back to the guys, $2 to the manager.

$9 * 3 = $27 + $2 = $29...

It baffles me how this can't reconcile.
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      03-05-2010, 11:22 PM   #4
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Quote:
Originally Posted by AMERICUS View Post
So I was told this today at the gym.

Three guys walk into a hotel and tell the manager they need a room. Each person hands the manager $10. The manager says, "Sorry, the room is $25 / night." One of the men says, "that's fine, give us each back $1 and keep $2 as a tip."

How much did each of the three men spend?

How much was given to the manager for a tip?

Do the math...anyone notice a problem?


Room = $25.
Manager given $30.
Tip = $2.
Each man gets $1 back.

25 +
2 +
3
----
30


what is the problem?
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      03-05-2010, 11:25 PM   #5
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This is a trick. There is no problem. LOL
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      03-05-2010, 11:29 PM   #6
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Quote:
Originally Posted by boymonkey View Post
This is a trick. There is no problem. LOL

It's all about approaching it the right way. Like a lot of things in life.
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      03-06-2010, 12:02 AM   #7
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Maybe it was a 3 dollar tip
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      03-06-2010, 12:04 AM   #8
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Quote:
Originally Posted by Dan in PA View Post
It's all about approaching it the right way. Like a lot of things in life.
Yeah, it depends on how you look at it.
This is a way to get an extra dollar or two from a waitress when you pay and tip her for a drink though.
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      03-06-2010, 12:16 AM   #9
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There is no missing dollar.

Original price of the hotel is $25.00


It appears to be missing a dollar, but its not

3 men spent $10.00 = $30.00 - $27 = $3.00 refund to each, -$2.00 for tip = $25.00 Original Price of hotel. Don't calculate the tip before the original cost.

I think. lol

My head hurts
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      03-06-2010, 05:13 AM   #10
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too late for this lol
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      03-06-2010, 07:58 AM   #11
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Quote:
Originally Posted by e92K335i View Post
There is no missing dollar.

Original price of the hotel is $25.00


It appears to be missing a dollar, but its not

3 men spent $10.00 = $30.00 - $27 = $3.00 refund to each, -$2.00 for tip = $25.00 Original Price of hotel. Don't calculate the tip before the original cost.

I think. lol

My head hurts
Either way you subtract the tip and refund it comes out to be the same.
By the way if anybody thought I didn't get it I already had figured it out.
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      03-06-2010, 10:21 AM   #12
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I remember seeing this question in Grade 10 math class, it blew my mind the first time
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      03-06-2010, 10:33 AM   #13
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Yeah I really don't understand the problem here. Works out fine for me?

$10 x 3 men = $30
$30 total - 3 x $1 refund = $27
$27 includes the original price of the hotel room ($25) and the $2 tip that the manager will retain.
$27/3 = $9 that each man spent

So now backwards, just to make sure:
3 x $9 = $27 + $3 refund = the original $30

Looks fine to me? What's the problem?
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      03-06-2010, 10:41 AM   #14
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Quote:
Originally Posted by jzmundy07 View Post
Yeah I really don't understand the problem here. Works out fine for me?

$10 x 3 men = $30
$30 total - 3 x $1 refund = $27
$27 includes the original price of the hotel room ($25) and the $2 tip that the manager will retain.
$27/3 = $9 that each man spent

So now backwards, just to make sure:
3 x $9 = $27 + $3 refund = the original $30

Looks fine to me? What's the problem?
Looks fine to me, now which one of you guys on here is the idiot at 7/11 who shorted me a dollar ??? lol
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      03-06-2010, 12:03 PM   #15
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For people that don't fully understand it yet still

3*9 = 27 - 25 og price = 2 dollar tip is already rolled into the total amount the three people paid .. The difference is the 3 dollar refund . No missing dollar! Lol... I just realized this after I couldn't sleep
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      03-06-2010, 12:17 PM   #16
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3x$9.33= $28 +$2tip= $30...
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      03-06-2010, 12:26 PM   #17
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you're all missing the point - what the hell are 3 guys doing in a hotel room that goes for $25/night???
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      03-06-2010, 02:07 PM   #18
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Quote:
Originally Posted by jzmundy07 View Post
Yeah I really don't understand the problem here. Works out fine for me?

$10 x 3 men = $30
$30 total - 3 x $1 refund = $27
$27 includes the original price of the hotel room ($25) and the $2 tip that the manager will retain.
$27/3 = $9 that each man spent

So now backwards, just to make sure:
3 x $9 = $27 + $3 refund = the original $30

Looks fine to me? What's the problem?
BUT 3 * 9 = 27 + 2 = 29...
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      03-06-2010, 02:27 PM   #19
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Quote:
Originally Posted by E90 87ss View Post
3x$9.33= $28 +$2tip= $30...
LOL
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      03-06-2010, 03:04 PM   #20
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Quote:
Originally Posted by aut0sh0cker View Post
LOL


Each pay $10 = $30

Their change is $5

All three pay $25 or the cost of the room, 25/3 = $8.33 per person...

They each receive a dollar back, so $9.33 per person...

9.33x3= 27.99 and they leave a $2 dollar tip, so $29.999999999999999...

What's the lol about???
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      03-06-2010, 04:09 PM   #21
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Why are three guys getting a $25 hotel room together?

That's what I notice is wrong.
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      03-06-2010, 04:15 PM   #22
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Quote:
Originally Posted by AMERICUS View Post
BUT 3 * 9 = 27 + 2 = 29...

Its wrong. Why would you add the 2 dollar tip in twice?

25 (room) +2 (tip) = 27 +2 (tip) = 29

thats the tip twice .....



Anyways reminds me of an old one, Here goes:

You have a bag of 20 marbles, 10 are Red and 10 are blue. You reach into the bag and pick a marble without looking. You repeat this 10 times. Of the 10 times you reach into the bag, you pull out a blue marble 6 times, and a red marble 4 times. What are the odds the next marble will be blue?
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Last edited by Optherion; 03-06-2010 at 04:21 PM..
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