Begin by selecting the formula to calculate the breakeven points. Contribution margin per unit Next, select the formula to calculate the number of tickets needed to meet the target operating income. Quantity of units required to be sold = ( Now complete the requirement for each of the cases. Begin with case 1. Case 1: Sunrise's variable costs are $40 per ticket. Edmonton Air pays Sunrise 10% commission on ticket price. Requirement Sunrise must sell tickets to break even and tickets to meet the target operating income. Calculate the number of tickets Sunrise must sell each month to (a) break even and (b) make a target operating income of $17,000 per month in each of the following independent cases. (Round up to the nearest whole number. For example, 10.2 should be rounded up to 11.) 1. Sunrise's variable costs are $40 per ticket. Edmonton Air pays Sunrise 10% commission on ticket price. 2. Sunrise's variable costs are $38 per ticket. Edmonton Air pays Sunrise 10% commission on ticket price. 3. Sunrise's variable costs are $38 per ticket. Edmonton Air pays $55 fixed commission per ticket to Sunrise. Comment on the results. 4. Sunrise's variable costs are $38 per ticket. It receives $55 commission per ticket from Edmonton Air. It charges its customers a delivery fee of $8 per ticket. Comment on the results