Problem 2 (15 marks) Airborne Travel uses the contribution margin income statement internally. Airborne's first quarter results follow. Airborne Travel Contribution Margin Income Statement Three Months Ended March 31 $ 318,500 Sales revenue (129,000) Less: Variable expenses 189,500 Contribution margin (179.000) Less: Fixed expenses $ 10,500 Operating income Requirements 1. Compute break-even sales in dollars. (Hint: Use the contribution margin ratio.) 2. What is Airbome Travel's current margin of safety (in dollars)? 3. What is Airbome Travel's current operating leverage factor? 4. If sales volume increases 4% next quarter, by what percent will Airborne's operating income increase? What will the new operating income be