searching a range for a sum...

[Guest]

Dear all - I'm not familiar with accounting jargon but what I need is this:
say I have a range of different numbers from cell A2 to cell A100. I need to
establish if any of these cells *ADDED TOGETHER* equal "x". so when I enter
the no "x" into the formula in cell A102, this will then highlight which
cells will equal "x".

An example: I need to establish if any cells added together equal 150. I
put in 150 in the formula. Formula then searches the range A2 to A100 and
highlights cell A27 which contains no.100, and cell A89 which contains the
no. 50.

Any assistance will be most sincerely appreciated!!

Cheers Bob

 

[Morrigan]

Dear all - I'm not familiar with accounting jargon but what I need is
this:
say I have a range of different numbers from cell A2 to cell A100. I
need to
establish if any of these cells *ADDED TOGETHER* equal "x". so when I
enter
the no "x" into the formula in cell A102, this will then highlight
which
cells will equal "x".

An example: I need to establish if any cells added together equal 150.
I
put in 150 in the formula. Formula then searches the range A2 to A100
and
highlights cell A27 which contains no.100, and cell A89 which contains
the
no. 50.

Any assistance will be most sincerely appreciated!!

Cheers Bob

To highlight:
Select A2:A100, Formats -> Conditional formatting
If the current cell is A2 , then formula is =$B2=1, and choose a
colour


Now use Solver and try the following:

B2:B100 = 0
A102 = SUMPRODUCT(A2:A100,B2:B100)

In Solver, target cell is A102 equals to value of <your target value>
by changing cells B2:B100. There should also be another window that
reads "Subject to the contraints". In here add a constraint B2:B100 =
binary. This limit B2:B100 to be either 1 or 0. Run solver.

Here is the catch, if some numbers you know they can appear more than
once, those numbers need to appear more than once in your data (ie.
A2:A100 in the above example). Another catch is that there may be more
than one combination that yields the same target value and solver will
not give you all the results.


Hope it helps

 

[chickenshed_bob]

Morrigan - thankyou for the response.

Unfortunatelly, I can't get it to work. In the "solver parameters
I've set the target cell to equal to an amount which I know exists i
two of the cells in the range (and the two said cells are the onl
cells which equal to the amount in the target cell) but it seems unabl
to work this out.

:confused

 

[chickenshed_bob]

Morrigan - thankyou for the response.

Unfortunatelly, I can't get it to work. In the "solver parameters"
I've set the target cell to equal to an amount which I know exists in
two of the cells in the range (and the two said cells are the only
cells which equal to the amount in the target cell) but it seems unable
to work this out.

 

[Morrigan]

Attached is an example using 10 numbers.


Hope it helps.


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