Use the following information to answer Questions 11 through 13. Hector Janitorial Service provides cleaning services to both homes and offices. In the past year, net operating income was as follows: Homes Offices Total Revenue $240,000 $560,000 $800,000 Variable costs $192,000 $420,000 $612,000 Contribution margin $48,000 $140,000 $188,000 Common fixed costs $180,750 Operating income $7,250 Management expects the company's selling prices, variable costs (cleaning supplies and labor), and fixed costs to remain stable for the next several years.Question 13 6 pts Because its home cleaning business is relatively new, Hector believes that the number of homes cleaned will grow in the upcoming year. It is not expecting a change in the volume of ofces cleaned. As a result, it expects the home cleaning business to be 48% of revenue next year. Compute Hector's weighted average contribution margin ratio under this new sales mix. 0 None of the above. 0 24.8% 0 20.0% 0 22.6%