Sunshine music shop bought a stereo for $600 and marked it up 40% on selling price. to promote customer interest, sunshine marked the stereo down 10% for one week. since business was slow, sunshine marked the stereo down an additional 5%. after a week, sunshine marked the stereo up 2%. what is the new selling price of the stereo to the nearest cent? what is the markdown percent based on the original selling price to the nearest hundredth percent? make sure to include $ and % signs where appropriate.