Calculate the selling price from cost and markup percentage.
Markup is the amount added to the cost to get the selling price, expressed as a percentage of cost.
Markup Amount = Cost x (Markup % / 100)
Selling Price = Cost + Markup Amount
For example, if cost is $40 and markup is 50%:
Markup Amount = $40 x 0.50 = $20. Selling Price = $40 + $20 = $60.
The equivalent profit margin would be: ($20 / $60) x 100 = 33.33%.