. Question 4 A retailer purchased a product for $135 and had operating expenses of 10% of the cost and operating profit of 30% of the cost on each product. During a seasonal sale, the product was marked down by 30%. a) What was the regular selling price? $ b) What was the amount of markdown? $ c) What was the sale price? $ d) What was the profit or loss at the sale price? O Profit O Loss O Breakeven