James House is planning on starting a cleaning services business but has not decided whether he should focus on residential clients or commercial clients. His estimates of revenue. variable expenses and fixed expenses are shown below. Residential Comercial 110 per hour $ 120 per hour Variable expense 5 66 per hour $ 6 per hour Fixed expense $ 13,200 per month $ 15,120 per month Revenue 5 Required: 1. At what volume of hours per month will James be indifferent between focusing on residential versus commercial clients? Number of hours 320 2. Calculate the number of break-even hours for residential clients and commercial clients. (Round your answers to 1 decimal place) Break-even hours for residential clients Break-even hours for commercial clients hours hours 3. Assume that James decides to focus on commercial clients and his business is operating at 355 hours per month Calculate the margin of safety both in dollars and as a percentage of sales. (Round percentage answer to 1 decimal place) 4 Margin of safety in dollars) Margin of safety as a percentage of sales