Problem 15-22A (Algo) Return on investment LO 15-6 Walton Corporation's balance sheet indicates that the company has $680,000 invested in operating assets. During the year, Walton earned operating income of $92,480 on $1,360,000 of sales. Required a. Compute Walton's profit margin for the year. b. Compute Walton's turnover for the year. c. Compute Walton's return on investment for the year. d. Recompute Walton's ROI under each of the following independent assumptions: (1) Sales increase from $1,360,000 to $1,632,000, thereby resulting in an increase in operating income from $92,480 to $97,920. (2) Sales remain constant, but Walton reduces expenses, resulting in an increase in operating income from $92,480 to $95,200. (3) Walton is able to reduce its invested capital from $680,000 to $544,000 without affecting operating income. Complete this question by entering your answers in the tabs below. Req A to C Req D Compute Walton's profit margin, turnover and return on investment for the year. (Round "Profit margin" and "Return on investment" to 1 decimal place (i.e., 0.234 should be entered as 23.4).) a Profit margin % timan