** I need help with C and D only** please not the answers reflected are WRONG.**

TufStuff, Inc., sells a wide range of drums, bins, boxes, and other containers that are used in the chemical industry. One of the company's annually on the machine. Because each drum requires 0.8 hours of welding machine time, annual production is limited to 2,750 drums. At present, the welding machine is used exclusively to make the WVD drums. The accounting department has provided the following financial data concerning the WVD drums: WVD Drums Selling price per drum Cost per drum: 156.00 Direct materials $44.70 4.50 3.35 15.60 Manufacturing overhead Selling and administrative expense 68.15 $ 87.85 Margin per drum Management believes 3,250 WVD drums could be sold each year if the company had sufficient manufacturing capacity. As an alternative to adding another welding machine, management has considered buying additional drums from an outside supplier. Harcor Industries, Inc., a supplier of quality products, would be able to provide up to 2,000 wVD-type drums per year at a price of $140 per drum, which TufStuff would resell to its customers at its normal selling price after appropriate relabeling Megan Flores, TufStuff's production manager, has suggested that the company could make better use of the welding machine by drums. Megan believes that TufStuff could sell up to 3,100 bike frames per year to bike manufacturers at a price of $67 each. The accounting department has provided the following data concerning the proposed new product $ 67.00 Cost per frame Direct materials Direct labor ($18 per hour) Manufacturing overhead Selling and administrative expense $17.70 22.50 15.95 6.70 62.85 $ 4.15 Margin per frame The bike frames could be produced with existing equipment and personnel. Manufacturing overhead is allocated to products on the basis of direct labor-hours. Most of the manufacturing overhead consists of fixed common costs such as rent on the factory building, but some of it is variable. The variable manufacturing overhead has been estimated at $1.07 per WVD drum and S.80 per bike frame. The variable manufacturing overhead cost would not be incurred on drums acquired from the outside supplier. Selling and administrative expenses are allocated to products on the basis of revenues. Almost all of the selling and administrative expenses are fixed common costs, but it has been estimated that variable selling and administrative expenses amount to $0.87 per WVD drum whether made or purchased and would be $.60 per bike frame. All of the company's employees-direct and indirect -are paid for full 40-hour workweeks and the company has a policy of laying off workers only in major recessions. 4. Redo requirements (2) and (3) making the opposite assumption about direct labor from the one you originally made. In other words, if you treated direct labor as a variable cost, redo the analysis treating it as a fixed cost. If you treated direct labor as a fixed cost, redo the analysis treating it as a variable cost. a. Compute the contribution margin per unit for [assume direct labor is a variable cost]: (Do not round intermediate calculations. Round your answers to 2 decimal places.) Contribution Margin $15.13 per unit Manufactured WVD drums104.86 per unit Manufactured bike frames 25.40per unit Purchased WVD drums b. Compute the contribution margin per welding hour for [assume direct labor is a variable cost]: (Round your final answers to 2 decimal places.) Manufactured WVD drums Manufactured bike frames Contribution Margin 131.08Hper hour per hour c. Determine the number of WWD drums (if any) that should be purchased and the number of WVD drums andor bike frames (if any) that should be manufactured. [Assume direct labor is a variable cost] WWD drums 1,275 3,100 1,975 Bike frames d. What is the increase in net operating income that would result from this plan over current operations? (Do not round intermediate calculations.) Increase in net operating income $ 83.027