negative time summation calculation for a standard day

[Glamb]

I am trying to use calculations with time in the form hh:mm - hh:mm and EXCEL
does not like negative time. The calculation is to accumulat over a week the
actual time worked by aggregating the hours worked on a daily basis. Thus at
the end of the week the time worked is ((monday time worked) XX:XX - 7:12 +
(tuesday time worked) XX:XX - 7:12, etc for the week)

 

[Teethless mama]

Tool > Options > Calculation > check 1904 date system
or
convert excel time to decimal by multiply by 24

 

[Fred Smith]

Excel will happily do any calculations with times, it just won't *display* a
negative time. If you don't ever have to display a negative time, then just
do the calculations. If you do, TM has given you the options.

Regards,
Fred