Date: Mon, 25 Nov 2002 14:01:22 -0500

Author: "John L. Hubisz"

Subject: Re: mental gymnastics

Post:

70 over percentage growth rate equals doubling time.

John

At 12:18 PM 11/25/2002 -0500, you wrote:
>There are some "mental gymnastics" in the NJSTA newsletter that I use in
>my science club. Most answers are "scientific." For example:
>
>5280 = F in a M (feet in a mile)
>
>7 PC in L (primary colors in light)
>
>
>A few have stumped me:
>
>70/PGR = DT
>
>1/127 = A
>
>Anyone know what those letters stand for?

John L. Hubisz, Physics Department, Box 8202, North Carolina State
University, Raleigh NC 27695-8202; hubisz@unity.ncsu.edu, (919)515-2515,
(919)515-7331 FAX

http://www.science-house.org/middleschool/

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