Selling Price after a 10% Profit Margin is applied to an item that Cost $910

Given: Cost = $910,  Profit Margin = 10%
Profit Margin as a Decimal: 10% = 0.1
Formula:
Selling Price =  

Cost/ 1 – Profit Margin as a Decimal

Selling Price =  

$910/ 1 – 0.1

Selling Price =  

$910/ 0.9

Selling Price = $1,011.11
Notes:
Profit = Selling Price – Cost = $1,011.11 – $910 = $101.11
Markup Amount = Profit = $101.11
Markup Percentage =  

Markup Amount/ Cost

=  

$101.11/ $910

= 0.1111 = 11.11%