9. A motel has 90 rooms it usually rent out in the following proportion: 40% singles at: $70 per night 30% doubles at: $75 per night 30% triples at: $100 per night The motel has annual fixed cost of $510,900 and variable cost averages $15 per room occupied (a) Calculate the motel's breakeven level and occupancy percentage. (b) Calculate the occupancy percentage to provide before tax operating income of $75,000