Tropic Corp. has sales revenue of $501,000 resulting in operating income of $54,000. Average invested assets total $608,000, and the cost of capital is 6% Calculate the return on investment if sales increase by 10% and the profit margin and invested assets remain the same. (Round your intermediate calculations and final answers to 2 decimal places.) Multiple Choice 8.88% 9,81% 5.87% 10.67%