an iterative calculation -- sort of

  • Thread starter Thread starter ali
  • Start date Start date
A

ali

hello

i have values

10
15
20
30
40

....from which i want to subtract 30, starting with the first number and
iterate through my list until i've completed the sum. so for example i would
eliminte the 10, 15 and part of of the 20 to be left with:

0
0
15
30
40

This is the first part of a bigger problem and ideally i'd like to attempt
it without any vba. is this even possible ??


thanks
ali
 
hello

i have values

10
15
20
30
40

...from which i want to subtract 30, starting with the first number and
iterate through my list until i've completed the sum. so for example i would
eliminte the 10, 15 and part of of the 20 to be left with:

0
0
15
30
40

This is the first part of a bigger problem and ideally i'd like to attempt
it without any vba. is this even possible ??


thanks
ali
Click to expand...

If you values are in column A starting on row 2 (not row 1)
try the following formula in cell B2.
Make sure that cells A1 and B1 are blank.

=A2-MIN(A2,30-SUM(A$1:A1)+SUM(B$1:B1))

Copy this formula down in column B as far as you have column A data.

Hope this helps / Lars-Åke
 
Try this, sort of...

=A2-MIN(MAX(30-SUM(A$1:A1),0),A2)

here I assume there is not number in a1 and that the data starts in A2.
Fill down.
 
Shane Devenshire said:
Try this, sort of...

=A2-MIN(MAX(30-SUM(A$1:A1),0),A2)

here I assume there is not number in a1 and that the data starts in A2.  
Fill down.
Click to expand...

Or just make B2

=MIN(MAX(SUM(A$2:A2)-30,0),A2)

and fill down. This doesn't depend on A1 being empty.
 
thanks everyone, I'm at home now & don't have xl, but will try at work
tomorrow.

thanks again

ali



Shane Devenshire said:
Try this, sort of...

=A2-MIN(MAX(30-SUM(A$1:A1),0),A2)

here I assume there is not number in a1 and that the data starts in A2.
Fill down.
Click to expand...

Or just make B2

=MIN(MAX(SUM(A$2:A2)-30,0),A2)

and fill down. This doesn't depend on A1 being empty.
 
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