My brain has gone into meltdown and i need help with a formula that will
look up data in two columns and if the criteria is met in column A it
will sum the adjacent cells in column B

Column A has time elapsed from invoice date to payment received (in a
number format, not date)
Column B has the value of said invoice

Using the criteria below i want a sum total of all invoices that were
paid in each range. I can get it to do the sum for all invoices paid
under 30days easily, but all the ones i've tried that include =30<60
etc fail.
0-30
31-60
31-90
91-120
121+

Where am i going wrong? I've done it before but i just can't recall
what i did...

any suggestions appreciated.


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penri0_0


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