A reducing number by given dates

J

jdmagoo

Hi all, basically what im trying to create is a spreadsheet showing ho
many payments i have left on an item i purchased. Now i pay $100 o
this item on every 2nd friday. So my question is, what is a formul
that will look at todays date and reconise that it is the second frida
when payment is due and reduce a given figure in a cell by $100. Fo
example, Total cost is $1000, payments = $100, payments are due o
07/10/05, 21/10/05, 04/11/05 etc So when the 07/10/05 arrives tota
cost will = $900, when 21/10/05 arrives total cost will = 800 etc
Obviously when the date is other than specified the total cost dosn
change.

Hopefully i have made my self clear and somebody can help out with th
dilema

Many thanks
Jame
 
R

Roger Govier

Hi

One way, with your purchase price in A1, enter in A2
=A1-INT((TODAY()-"23/09/2005")/14)*100

or if you just want to use a single cell, then
=1000-INT((TODAY()-"23/09/2005")/14)*100

Regards

Roger Govier
 

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