Posted by Diana on Monday, January 30, 2012 at 3:48pm.
number of cards --- x
so ...
x/3 + x/4 + x/6 + 27 = x
times 12
4x + 3x + 2x + 324 = 12x
3x = 324
x = 108
check:
108/3 + 108/4 + 108/6 + 27
= 36+27+18+27
= 108
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