Franklin's Plumbing specializes in a specific copper tube that it sells to condo construction companies throughout Canada for $85 each. The copper tube costs Franklin's $55 to make. Last year, they sold over 250,000 copper tubes, with a revenue of $21.25 million. What is the company's margin? Identify a way that Franklin's Plumbing can increase its margin percent. If they wanted to increase their margin dollar per unit to $40 what would they need to increase their selling price to and what would be their new margin percent