a. Under what circumstances is it appropriate to develop just one plan rather than two (one for each size)? b. Suppose forecasts for the two sizes are summed to obtain one forecast for each month. Currently David employs 27 full-time, highly skilled employees, each of whom can produce 50 bikes per month. Because skilled labour is in short supply in the area, David would like to keep them permanently. There is no inventory on hand at present, but David would like to have 300 units on hand at the end of April. A maximum of 200 bikes can be produced during overtime each month. Determine the minimum cost production plan using these unit costs: Regular Overtime $50 Inventory $2.00 per month $75 Back order $10.00 per month (Hint: Use overtime in November, December, and April.) 13. A niche bicycle manufacturer manufactures bicycles in two different sizes. David, the company's owner-manager, has just received the following forecasts for the next six months. LO2 16-inch 20-inch Nov. 1,000 units 500 units Dec. 900 500 Jan. 600 300 Feb. 700 500 Mar. 1,100 400 Apr. 1,100 600