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Weird problem with time calculations. Sum won't work. Plus will.

Posted on 2016-09-28
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Last Modified: 2016-09-28
In the attached file, if I try to add up the times using Autosum (A36) I get 0. If I add them up using +, (B2), I can add them up...anyone got any ideas as to what this might be?
odd_time_calculations.xlsx
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Question by:agwalsh
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ProfessorJimJam earned 500 total points
ID: 41819524
it is the formatting issue.  the reason it works with + is that any math operation converts the text like value back to numeric and the SUM do not work becuase it ignore the text hence it does not work.

if you select the cells and click into text 2 column and select delimiter and then click finish it will fix the issue and SUM will work.

to confirm that these cells are stored as text, you can put this formula in another cell =ISTEXT(A5)  and it will result true.

if you do not want them converted then use this formula =SUMPRODUCT(--(A5:A9))  that double negatives at the begining will forcefully convert the values in that range inside formula as numbers and then sumproduct will add them.
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by:agwalsh
ID: 41819559
Well, blow me down with a feather. I checked and the text to columns worked beautifully. Thank you.
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by:agwalsh
ID: 41819560
A superb answer to an annoying question...thank you :-)
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by:ProfessorJimJam
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you are welcome agwalsh.
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