Hi,

Am Mon, 13 Oct 2014 20:54:07 +0200 schrieb Claus Busch:

=SUMIF(A1:A4,"0",B1:B4)

if there can be values < 0 in column B then try:
=SUMIFS(B1:B4,A1:A4,"0",B1:B4,"0")
or
=SUMPRODUCT(--(A1:A40),--(B1:B40),B1:B4)


Regards
Claus B.
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Vista Ultimate / Windows7
Office 2007 Ultimate / 2010 Professional