Aclothing retailer purchased a line of fall leather coats which were priced to sell at $600 each. this price reflected a markup of 45% on the selling price. at the end of the season the retailer had three coats left, which were marked down 25% and sold. what was the retailer's actual percentage markup on the coats that were sold at 25% off? calculate this percentage both as a percentage of the selling price, and as a percentage of the cost price.