Nail & Hammer Shack purchased 225 table fans of a particular make. The unit cost was $25.50 and the regular selling price was $49 each. The store sold 120 table fans at the regular selling price. During a sale, it sold another 60 at a markdown of 20%. The remaining units were sold at an additional markdown of 10%. Determine the net rate of markup based on total cost.

AppendixLO1