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18 replies to this topic

#1 sandstorm

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Posted 20 March 2008 - 03:56 AM

Here's another one from Math Magic.

A man has breakfast at his camp. He gets up and travels due North.
After going 10 miles in a straight line he stops for lunch. After lunch he gets up and travels due North. After going 10 miles in a straight line he finds
himself back at camp. Where on earth could he be?
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#2 roolstar

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Posted 20 March 2008 - 11:36 AM

When you say "travels due North".

Do you mean using a compass or adapting with the sun's position???

Spoiler for If it's the sun's position that's guiding him

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#3 brhan

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Posted 20 March 2008 - 11:44 AM

on the north pole ...
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#4 imran

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Posted 20 March 2008 - 11:56 AM

Here is my solution

Spoiler for Solution

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#5 sandstorm

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Posted 20 March 2008 - 05:04 PM

Here is my solution

Spoiler for Solution


I believe you're right.
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#6 statman

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Posted 20 March 2008 - 06:24 PM

Here's another one from Math Magic.

A man has breakfast at his camp. He gets up and travels due North.
After going 10 miles in a straight line he stops for lunch. After lunch he gets up and travels due North. After going 10 miles in a straight line he finds
himself back at camp. Where on earth could he be?

Spoiler for due North

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#7 niner

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Posted 20 March 2008 - 06:27 PM

Here's another one from Math Magic.

A man has breakfast at his camp. He gets up and travels due North.
After going 10 miles in a straight line he stops for lunch. After lunch he gets up and travels due North. After going 10 miles in a straight line he finds
himself back at camp. Where on earth could he be?


Could he not be 10 miles from the South Pole?
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#8 toddpeak

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Posted 20 March 2008 - 07:39 PM

Could he not be 10 miles from the South Pole?

Nah, he'd end up 30 miles from the South Pole if he went North twice.
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#9 itachi-san

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Posted 20 March 2008 - 07:44 PM

Is the person constantly traveling North or does he find North once and then walk for 10 miles? If he is constantly going North, which is how I read this, then I can't make sense out of it. I believe the answer is meant to be the North Pole, but at some point in his travels he is not traveling North.
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#10 toddpeak

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Posted 20 March 2008 - 07:49 PM

Is the person constantly traveling North or does he find North once and then walk for 10 miles? If he is constantly going North, which is how I read this, then I can't make sense out of it. I believe the answer is meant to be the North Pole, but at some point in his travels he is not traveling North.

Yeah, I think he looks at his compass, and heads north for ten miles, even though 5 miles into it he's traveling south. You can't travel north from the north pole. The 5 miles south of the North pole answer works.
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