Umar Ltd is considering selling Calendars and Printed Arts which would result in the following estimates: Calendars Printed Arts Expected sales volume in units 10,800 8,990 Selling price per unit $17 $23 Total variable costs per unit $9 $13 Annual (combined) fixed costs $129,000 Calculate the following. Please do not show any workings. Unless otherwise stated, please show your answer in 2 decimal places (i.e. 6.50). a. The contribution margin (per unit) for calendars is $ b. The contribution margin (per unit) for printed arts is $ c. Calculate the sales mix proportion. Please include your answer as a ratio to 2 decimal place (not as a percentage). As an example, 0.62 instead of 62.00%. i. The sales mix proportion for Calendars is ii. The sales mix proportion for Printed Arts is d. The weighted average contribution margin is $ . Please round your answer to 2 decimal places. In your calculation, please use rounded answers from all previous parts of the question as required (i.e., please use exact answer as