The Crane Inn is trying to determine its break-even point. The inn has 72 rooms available that are rented at $ 80 a night Operating costs are as follows: Maintenance $ 480 per month Salaries Utilities Depreciation $ 16,860 per month $ 1.820 per month $1,900 per month $5 per room Housekeeping service Other costs $39 per room If the inn plans on renting 25 rooms per day (assuming a 30-day month), what is the monthly margin of safety in dollars and the margin of safety ratio? Monthly margin of safety $ Margin of safety ratio %6