The contibution matgin income statement of Delectable Donuts for Auggst 2024 follows: (Click the icon to view the contizution margin incoree statement) Delectable sells two dozen plain donuts for every dozen austard-filed donuts. A doten plain donutn sells for $300, with total variable cost of 51,35 per dowen. A dozen custard fillsd donuts sels for $600. with total variable cost of $270 per dozen Requirement 1. Calculate the weighted wverage contribution margin. (Round all currency amounts to the nearest cent) Data table Requirements 1. Calculate the weighted-average contribution margin. 2. Determine Delectable's monthly breakeven point in dozens of plain 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 Delectable's margin of safety in dollars for August 2024. 4. Compute the degree of operating leverage for Delectable 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.)