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Unread 07-02-2011, 12:45
Richard Wallace's Avatar
Richard Wallace Richard Wallace is offline
I live for the details.
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Re: Mathematical Discoveries

Quote:
Originally Posted by Ether View Post
Solve the attached puzzle.


Cool puzzle. Let's add a twist: the message to the General comes from headquarters. It reads, "The enemy is attacking our fort on the other side of the desert."

After receiving the message, the General orders the Army to march twice as fast. When the Horseman returns to his post in the rear, the Army has advanced 45 miles from its position when he left. The Horseman always rides as fast as he can, so his speed returning is the same as his speed when delivering the message.

How many miles did the Horseman ride?
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Richard Wallace

Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003

I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)
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