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January 28, 2015

January 28, 2015

Posted by **Anonymous** on Sunday, March 15, 2009 at 12:56pm.

- math -
**Reiny**, Sunday, March 15, 2009 at 1:07pmr + c = 20

r = 3c

personally, I would not use two variables for a simple one like this

No. of cardinals = x

then robbins = 3x

x + 3x = 20

so easy .... this way

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