A department store buys 100 shirts at a cost of $600 and sells them at a selling price of 10 each fi

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A department store buys 100 shirts at a cost of $600 and sells them at a selling price of 10 each find the percentage mark up

Find Unit Cost:
Unit Cost = Cost / Number of Shirts
Unit Cost = 600 / 100
Unit Cost = 6

With a selling price of 10, our markup percentage is:
Markup % = 100 * (New Price - Old Price)/Old Price
Markup % = 100 * (10 - 6)/6
Markup % = 100 * 4/6
Markup % = 400/6
Markup % = 66.67%