Use the following assumptions to determine return on assets (exclude cash from total assets, the way we did it in the video): Revenue = $1580, gross margin percentage = 65%, operating expenses = $523, interest expense = $20, income tax rate = 30%, Cash = $1800, inventory = $600, equipment = $500, accumulated depreciation = $200. O 13% O 14% O 19% O 38% O none of these Given the following, what is the interest coverage ratio? Revenue = $1500, gross margin = 50%, operating expenses = 40% of revenue, interest expense = $20, income tax rate = 30%. O 5.0 0 7.5 O 10.0 O 12.5 O none of these