Selling Price after a 50% Profit Margin is applied to an item that Cost $50

Given: Cost = $50,  Profit Margin = 50%
Profit Margin as a Decimal: 50% = 0.5
Formula:
Selling Price =  

Cost/ 1 – Profit Margin as a Decimal

Selling Price =  

$50/ 1 – 0.5

Selling Price =  

$50/ 0.5

Selling Price = $100
Notes:
Profit = Selling Price – Cost = $100 – $50 = $50
Markup Amount = Profit = $50
Markup Percentage =  

Markup Amount/ Cost

=  

$50/ $50

= 1 = 100%