And after our heads exploded, we stopped talking to each other

Listening to the radio is standard morning entertainment for us. On weekdays, I get the news on CBC three or four times between 0600 and 0800, which is roughly the time differential between when younger son gently and lovingly screams us awake and when I get to leave for work, having shuffled the family out the door. On Saturdays, it's Weekend Mornings, an interesting mixture of centenarian call-in and music from the past two millenia. It's passable, but not for more than an hour or so.

Later on, there's a program that mixes humour with new music, and has fun guests. We try to listen to this as the children fight in the backseat, but usually don't get to follow from one segment to the other. Today, however, we had the opportunity to be completely baffled by a university professor and three mathletes. And even though I was pretty sure I knew what the answer was, I'll be damned if I could communicate it in such a way as to elicit any other response than "that sounds like bull shit" from The Lovely Wife (mouth like a trucker, that one). Of course, the mathletes didn't do much better on the answers, but we're told they all got the problems right.

The problem in question? This one:

Three men rent a hotel room. Each pays $10 for a total of $30 spent on the room. The next day the hotel owner tells the three men that they over paid for the room as it only costs $25. The three men tell the owner to give them each a dollar back and he can keep two dollars.

If you do the math, each man paid $9 a piece for the room for a total of $27. The owner kept $2 which brings the total to $29.

The question is where did the other dollar go?

Feel free to google the answer, if you have to. Brianna and LaFarlow, I expect a full explanation in the comments.

Posted bythemikestand at 2:28 PM  

4 stepped up to the mike:

Steph said... 10:09 PM, November 17, 2007  

First of all - Stan on WM is my all time favourite radio host. I guess I just have an old soul.

Second - I listened to the Mathletes on Go and here's my answer:

That dollar doesn't exist. The common mistake is to add the $2 to the $27 the men paid. You should subtract the $2 because the room rate was $25.

$30 paid.
- $5 returned (regardless of who gets it)
________
$25 for the room.

Third: I was a total math nerd in school.

Brianna said... 1:41 AM, November 18, 2007  

stef pretty much called it. there isn't an extra dollar -- the room essentially cost $27 ($25 + $2 tip) and each guy gets back $1 $27+3 = $30. Tada!

Mathletes Represent!

corgimom said... 11:40 AM, November 18, 2007  

Hey, our household figured it out in about one minute; not bad for a lawyer, a scientist and an accountant,huh?

SRH said... 7:08 PM, November 18, 2007  

"A lawyer, a scientist, and an accountant..."

Sounds like a set up for a bad joke

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