Thread: need help with a formula
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Old October 3rd, 2008, 10:12 AM
Chop Suey Chop Suey is offline
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r=\frac{365(100-p)}{pd}

First multiply both sides by pd: prd = 365(100-p)

Expand the right side: prd = 36500 - 365p

Move all p's to the same side and everything else on the opposite side: prd + 365p = 36500

Take p as common factor: p(rd + 365) = 36500


Divide both sides by (rd+365) and we're done.
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