For example, if a product costs $100, the selling price with a 25%
markup would be $125. Gross Profit Margin = Sales Price -C Unit Cost = $125 -C $100 = $25.
Markup Percentage = Gross Profit Margin/Unit Cost = $25/$100 = 25%. Sales Price = Cost X
Markup Percentage + Cost = $100 X 25% + $100 = $125.
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