Hi,

Am Wed, 20 Mar 2013 09:45:52 -0700 (PDT) schrieb :

A B C D E
3/15/2013 Colorado 2 4 1
3/15/2013 KS 1 5 0
3/16/2013 Colorado 9 1 2

or:
=SUMPRODUCT(($A$1:$A$100=A1)*($B$1:$B$100=B1)*$C$1 :$E$100)


Regards
Claus Busch
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Win XP PRof SP2 / Vista Ultimate SP2
Office 2003 SP2 /2007 Ultimate SP2