Hi,

Here is the basic idea

=SUMPRODUCT(--((D9:D24-E9:E24)<(16/1440)),--(F9:F24=""))

You will need to adjust for the path to the other file, but the end time is
in the range D9:d24 the start time in E9:E24, 16/1440 is the fraction that
represents 16 minutes, F9:F24 is the cells that may not contain anything.


If this helps, please click the Yes button.
--
Thanks,
Shane Devenshire


"Lenchik" wrote:

Hello,

My excel file collects information from another excel file, where I
have three columns: start_time, end_time, and another cell that is
suppose to contain a name of the person. Within one range (3-250) I
need to subtract end_time from start_time and see if it's less than 16
minutes, if so, if the third cell, does not contain the name, I need
to count all the occurances and record the number into the cell of the
correct file.


I cannot quite figure out how to perform subtraction within the range
(in this case: column G - column F):

=SUMPRODUCT(--(('path[FileA.xls]Tab1'!G3:G250 [...???...]
TIME(0,15,59))*(LEN('path[FileA.xls]Tab1'!Q3:Q250)=0)))

Thanks a ton for your advice!