Aeturn on investment The operating income and the amount of invested assets in eoch division of stewart lndustries are as follows: a. Compute the retum on investment for each division. (Round to the nearest whole percentage.) b. Which division is the most profitable per dollar invested? he operating income and the amount of invested assets in each division of Stewart Industries are as follows: csume that management has established a 10% minimum acceptable return for invested assets. Determine the residual income for each division