A car accessory is sold for $54.71. The store's markup based on cost is 45% (a) What is the cost of the car accessory? (b) What is the rate of markup based on selling price? (a) The cost of the car accessory is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) (b) The rate of markup based on selling price is % (Round the final answer to two decimal places as needed. Round all intermediate values to six decimal places as needed.) A department store paid $35.78 for a dinner plate set. Overhead expense is 9% of the regular selling price and profit is 24% of the regular selling price. During a clearance sale the set was sold at a down of 34% What was the operating profit or loss on the sale? The operating (Round the feat answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed) punt store paid $35.78 for a dinner plate set. Overhead expense is 2% of the regular selling price and proft is 24% of the regular wing price. During a da s the operating profit or loss on the sale? The operating (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed)