Hi

=SUMPRODUCT(--(C2:C10000="NEW"),--(B2:B10000<=$B$6),A2:A10000)
(adjust ranges to real ones)

NB! SUMPRODUCT doesn't support whole-column references. And multiplied
ranges must be of same dimension (same number of rows/columns).

How this works. For every element group, all elements are multiplied, and
results are summed. With your data, are calculated values
(--(C2="NEW"))*(--(B2<=B6))*A2
(--(C3="NEW"))*(--(B3<=B6))*A3
(--(C4="NEW"))*(--(B4<=B6))*A4
....

Now, both equations in formula can be true or false. An unary transformation
(--) converts TRUE/FALSE to their numeric equivalent, which is 0 for False
and 1 for TRUE
So summed are results of calculations like
0*0*Value
1*0*Value
0*1*Value
1*1*Value

I.e. summed are values from rows, where both conditions were TRUE


Arvi Laanemets



"Sabine" wrote in
message ...

Hi,
I have a similar doubt, but I couldn't understand the solution.
Let's take the same example:

A B C
1 Rent/Mth Start Date Type
2 $459.33 31/08/2005 NEW
3 $598.00 31/08/2005 OLD
6 $723.66 31/08/2005 BEST
5 ....
6 .... dd/mm/yyyy

So, to get a sum of column B when cell of column C="NEW" and when cell
of column B<B6, I tried to use the formula:

=SUMIF(C:C,C1,SUMIF(B:B,B6,A:A))

Unfortunately, it doesn't work.
How can I get this sum without an Auxiliary Column?
Tks,


--
Sabine
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