Burro Company had the following data for its Davison Dision, an investment center, for the most recent year: total contribution margin $813,430 budget, $790,140 actuat; controllable fixed costs - $308,100 budget, $290,819 actual. Average operating assets for the year were $2,240,000. Round answers to 2 decimal places ex 14.55 Determine the actual refum on investment