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September 20, 2014

September 20, 2014

Posted by **cathy** on Saturday, February 11, 2012 at 7:39pm.

- math -
**Reiny**, Saturday, February 11, 2012 at 7:51pmMathMate answered the same question last March, except there were 20 calculators instead of your 40

make the corresponding changes.

http://www.jiskha.com/display.cgi?id=1299561374

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