I need the answer for 5-8 only thanks!

TufStuff, Ine., sells a wide range of drums, bins, boxes, and other containers that are used in the chemical industry. One of the company's products is a heavy-duty corrosion-resistant metal drum, called the WVD drum, used to store toxic wastes. Production is constrained by the copacity of an automated welding machine that is used to make precision welds. A total of 2,000 hours of welding time is available annually on the machine. Because each drum requires 0.8 hours of welding machine time, annual production is limited to 2,500 drums. At present, the welding machine is used exclusively to make the WVD drums. The accounting department has provided the following financial data conceming the WVD drums: Management believes 3,000 WVD drums could be sold cach year if the company had sufficient manufacturing capacity. As an altemative to adding another welding machine, management has considered buying additional drums from an outside supplier. Harcor Industries, Ine, a supplier of quality products, would be able to provide up to 1,700 WVD-type drums per year at a price of $150 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 manufacturing bike frames, which would require only 0.2 hours of welding machine time per frame and yet sell for far more than the drums. Megan believes that TufStuff could sell up to 3,000 bike frames per year to bike manufacturers at a price of S77 each. The accounting department has provided the following data conceming the proposed new product: The bike frames could be produced with existing equipment and personnel. Manufacturing overhead is allocated to products on the basis of difect 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 S1.28 per WVD drum and S2.90 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 $1.08 per WVD drum whether made or purchased and would be $2.70 per bike frame. AIl of the company's employees - direct and indirect-are paid for full 40.00-hour work weeks and the cotnpany has a policy of laying off workers only in major recessions. Required: 1. Would you be comfortable relying on the financial data provided by the accounting department for making decisions related to the WVD drums and bike frames? Why? 2. Assuming direct labor is a fixed cost, compute the contribution margin per unit for: a. Purchased WVD drums b. Manufictured WVD drums c. Manufactured bike frames 3. Assuming direct labor is a fixed cost, compute the contribution margin per welding hour for: a. Manufactured WVD drums b. Manufactured bike frames 4. Assuming direct labor is a fixed cost: a. Determine the number of WVD drums (if any) that should be purchased and the number of WVD drams and/or bike frames (if any) that should be manufactured. b. What is the increase (decrease) in net operating income that would result from this plan over current operations? As soon as your analysis was shown to the top management team at TufStuff, several managers got into an argument conceming how direct labor costs should be treated when making this decision. One manager argued that direct labor is always treated as a variable cost in textbooks and in practice and has always been considered a variable cost at TufStuff. After all, "direct" means you can directly trace the cost to products. "If direct labor is not a variable cost, what is?" Another manager argued just as strenuously that direct labor should be considered a fixed cost at TuIStuff. No one had been laid off in over a decade, and for all practical purposes, everyone at the plant is on a monthly salary. Everyone classified as direct labor works a regular 40.00-hour workweek and overtime has not been necessary since the company adopted Lean Production techaiques. Whether the welding machine is used to make drums or frames, the total payroll would be exactly the same. There is enough slack, in the form of idle time, to accommodate any increase in total direct labor time that the bike frames would require. 5. Assuming direct labor is a variable cost, compute the contribution margin per unit for: a. Purchased WVD drums b. Manufactured WVD drams. c. Manufactured bike frames 6. Assuming direct labor is a variable cost, compyte the contribution margin per welding hour for: a. Manufactured WVD drums b. Manufactured bike frames 7. Assuming direct labor is a variable cost: a. Determine the number of WVD drums (if any) that should be purchased and the number of WVD drums and/or bike frames (if any) that should be manufactured. b. What is the increase (decrease) in net operating income that would result from this plan over current operations? 8. What do you think is the correct way to treat direct labor cost in this situation - as variable or as fixed? Explain