



 
Hi Tonya, I'll show you want I think you want but let me know if I have misinterpreted your question. You have a product you want to sell, your cost is C and you want to determine the markup M, both in dollars. You have to take into account a commission and your profit, both of which are percentages of what you charge your customer, (C + M) dollars. Suppose that the commission is a% of (C + M) and your profit is p% of (C + M). Hence the commission will be
and your profit will be
If you subtract the commission and your profit from what you charge your customer you should obtain your cost. That is
Solving this for M I get For example if C = $100, a = 15% and p = 30% then
Penny  


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