Local Co. has sales of $10.8 million and cost of sales of $5.8 million. Its selling, general and administrative expenses are $470,000 and its research and development is $1.2 million. It has annual depreciation charges of $1.2 million and a tax rate of 35%. a. What is Local's gross margin? b. What is Local's operating margin? c. What is Local's net profit margin? a. What is Local's gross margin? Local's gross margin is %. (Round to one decimal place.) b. What is Local's operating margin? Local's operating margin is %. (Round to one decimal place.) c. What is Local's net profit margin? Local's net profit margin is %. (Round to two decimal places.)