how do I ensure that the formulas from workbook 1 cumulatively add to workbook 2

[Clive69278]

I have a workbook that has times , hrs and minutes in it how do I ensure that workbook 2 cumulatively adds from workbook 1 to workbook 2 ?

[#2]

Hi
Can you share a sample file. There could be a multiple ways to commulatively add the value depending upon the data.
Thank you!