The gross profit P is the difference between the cost to make a product C and the selling price or revenue R.
P = R - C
The mark up percentage M is the profit P divided by the cost C to make the product.
M = P / C = ( R - C ) / C
The gross margin percentage G is the profit P divided by the selling price or revenue R.
G = P / R = ( R - C ) / R
HOPE THIS HELPS!!!!! :)
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