how do u get the contibution margin and total rooms at 100% theses are the correct answers just explain the way to get them thank you

RNR Motel is the worlds largest budget hotel chain found in 1972. It now has more than 96,000 rooms in more than 2,000 locations (average is 49 rooms) in the United States and Canada. Suppose a particular RNR Motel has annual fixed costs of $1,100,000 for its 110-room motel, average daily room rents of $51, and average variable costs of $11 for each room rented. It operates 365 days per year Requirements 1. How much net income on rooms will RNR Motel generate (a) if the motel is completely full throughout the entire year and (b) if the motel is half full? 2. Compute the break-even point in number of rooms rented. What percentage occupancy for the year is needed to break even? Total room revenue Variable costs Contribution margin Fixed costs Net income (loss) $2,047,650 $ 1,023,825 220,825 1606,000 803,000 1,100,000 1,100,000 441,650 Requirement 2. Compute the break-even point in number of rooms rented. What percentage occupancy for the year is needed to break even? Contribution margin per room 40 Fixed costs Break even # of rooms = 1,100,000 27,500 Determine the formula, then compute the percentage occupancy for the year that is needed to break even. (Round the percentage to the nearest tenth percent, XX%.) Total rooms at 100% full 40,150 Break even # of rooms = Percentage occupancy 27,500 68.5 %