2) Berhannan's Cellular sells phones for $100. The unit variable cost per phone is $50 plus a selling commission of 10%. Fixed manufacturing costs total $1,250 per month, while fixed selling and administrative costs total $2,500. (10 Marks) Required: a. What is the contribution margin per phone? b. What is the break-even point in phones? c. How many phones must be sold to eam pre-tax income of $7,500? 4) A company manufactures household items sold at trade shows. The items, classified as either Trinkets or Widgets are manufactured on a common assembly line. Although different direct materials are used, the direct labour cost is the same for each product line. (10 Marks) The plant-wide rate for allocating manufacturing overhead to its products is no longer acceptable. The production manager has heard about activity-based costing and has assembled some information for use in changing the cost system to a cost driver concept. I With the help of the accounting department, the manager has been able to ostablish the following relationships between production costs and some of the Indirect manufacturing activities for August, along with the production data for the two product lines: Activity Cost Driver Allocation Rate Trinkets Widgets Material handling Number of parts $1.00 per part 2,000 1,300 Machining Machine hours $15.00 per hour 205 300 Assembly Units began $1.60 per unit 1,000 1,300 Inspection Number tested $2.00 per unit 100 1,200 Direct costs: Trinkets Widgets Labour $12,000 $12,000 Materials $5,200 $2,600 Required: Using activity-based costing determine the total production cost of each of the two product lines for August and the cost per unit assuming all units started were completed. d