hi Ash87. not sure if you are using Excel 2003 as your profile mentioned. not a very good solution. i made the formula only possible for Jan-Mar. formula at E16 to be:
basically, my 1st SUM is a variable range that increases as it goes down & changes columns when it moves to the right.
my 2nd SUM is fixed at the whole range of column E, but only sums when looking at column G, which is Feb. this is to add Jan data only in Feb
my 3rd SUM is the same as the 2nd one, but fixing at column G (Feb), when looking at column I (Mar). add Feb data only in Mar
besides that, i make sure the entries are numbers & H2 is more than 0
it would actually be better if all your cells are actually dates, not numbers. that would help you not manually key in. but please raise it in another thread if you need.
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