Hi guys,
I have a sheet with the week number in column a and the number of days in column b.
I need a formula the sum of all the days that land in a particular week e.g
a b
1 10
1 10
2 11
if i wanted to get the sum of the number of days in week 1 what would the formula be please guys?
Hope you can help im sure its very simple. Cheers
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