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Forcing Solver to return whole numbers

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#1 arthurjohnso

arthurjohnso

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Posted 04 January 2014 - 11:11 PM

hello,

I viewed the add on Solver.  It works very well but one issue I would like to resolve.  I work with budgets including perceentages of salaries, supplies, etc.  When I use solver it works great except it gives me whole numbers plus a fraction. I have to order in whole numbers.  How can I change the parameters to whole numbers?  Thanks



#2 Jonathan

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Posted 05 January 2014 - 12:24 PM

Hi Arthur,

 

You can force Solver to use integers by adding an int constraint.

 

Using Solver and adding constraints is covered in Expert Skills Lesson 7-6: Use Solver.

 

Simply apply a constraint to the 'changing' cells (ie. the cells that Solver is going to change) with settings similar to the following:

 

solverconstraint.png

 

This will force Solver to use only whole numbers in the specified cells.

 

I can provide a more specific answer if you'd like to attach a copy of your spreadsheet or a screenshot of your Solver settings.


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