Which of the following is a common assumption in cost-volume-profit analysis? O Fixed costs remain constant during the time span considered. Mixed costs cannot be properly divided into their fixed and variable elements. All costs can be assigned to individual operated departments. O All of the above. Only a. and c. above. QUESTION 12 The Inn maintains an average selling price per room of $80 and incurs a variable cost per room sold of $30. If the property's fixed costs are $40,000 for the month, the breakeven point for the month would be: O 240 rooms sold 480 rooms sold. 600 rooms sold. 800 rooms sold. QUESTION 13 The Bistro expects to sell 20,000 meals during the upcoming month with an average variable cost per meal sold of $5. Total fixed costs are expected to be $100,000. At the breakeven point, what would the average selling price per meal sold be? $6. $9. $10. $15. $20