The Rich Inn is trying to determine its break-even point. The inn has 75 rooms available that are rented at $50 a night. Operating costs are as follows: Salaries $10,000 per month 500 per month Maintenance Utilities 2,000 per month 5 per room Housekeeping service Depreciation 1,000 per month Other costs 25 per room Instructions a. Determine the inn's break-even point in (1) the number of rented rooms per month and (2) dollars. b. If the inn plans on renting 30 rooms per day (assuming a 30-day month), what is (1) the monthly margin of safety in dollars and (2) the margin of safety ratio