Webpage column and gutter 'calculator'

[jarediledundee]

Hi All,
I'm a graphic designer (not a mathematician) and I'm trying to create a little calculator that will give me the column and gutter widths of a page, based on the following variables:
-Page width
-# of Columns desired
-Gutter width is x% of Column width (eg. all gutters would be 25% the width of the columns, or 50%, etc. etc.)


I'm just so poor at math and Excel formulas that I'm not able to figure it out consistently. Could anyone take a stab at it? Thank you so much in advance!!

	A	B
1	Page Width (pixels or points)	100
2	Number of Columns	2
3	Number of Gutters	1 (=(((B2)*2)-1)-(B2))
4	Gutter Width % of Column Width	25%
5	Column Width (calculated)	?
6	Gutter Width (calculated)	?

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[Worf]

Welcome to the Board