The contribution margin income statement of Trepani Donuts for August 2018 follows: (Click the icon to view the contribution margin income statement.) Trepani sells five dozen plain total variable cost of $1.60 pe dozen Don the man Requirement 1. Calculate the weighted average contribution margin. (Round all currency amounts to the nearest cont.) Plain Filled Total Contribution margin Weighted average contribution margin per unit Save estion 1 > Score: 0 of 15 points Trepani sells five dozen plain donuts for every dozen custard-filled donuts. A dozen plain donuts sells for $4.00, with total variable cost of $1.60 per dozen. A dozen custard-filled donuts sells for $8.00, with total variable cost of $3.20 per dozen. ERRE Dend the mante ome statement.) total variable cost of $1.60 per dozen. A dozen custard-fille dozen. Hoa += = = fees in .. tribution margin. - X Plain Fill Requirements 1. Calculate the weighted average contribution margin. 2. Determine Trepani's monthly breakeven point in dozens of plan donuts and custard-filled donuts. Prove your answer by preparing a summary contribution margin income statement at the breakeven level of sales. Show only two categories of costs: variable and fixed. 3. Compute Trepan's margin of safety in dollars for August 2018. 4. Compute the degree of operating leverage for Trepani Donuts. Estimate the new operating income if total sales increase by 20%. (Round the degree of operating leverage to four decimal places and the final answer to the nearest dollar. Assume the sales mix remains unchanged.) 5. Prove your answer to Requirement 4 by preparing a contribution margin income statement with a 20% increase in total sales. (The sales mix remains unchanged.) Print Done