Can you help me with the following revision questions please?

Barnmitl Ltd. produces three products from a single common process. Last month the inputs into the common process were: Direct materials 1,000 kg @ 55 per kg Direct labour 1,000 hours @ 15 per hour Production overheads 68,600 900 units of output emerged from the common process as follows: Product XR4: 50% Product YDB: 40% Product ZT 5: 10% Each of the products required further processing before they can be sold. Information on further processing costs together with selling prices for each product is outlined below: Product Product Product XR4 YDB ZTS Further processing materials (per unit) 200 400 440 Further processing labour (per unit) 80 100 120 Selling price (per unit) 800 1,000 1,200 Currently the organisation apportions joint costs to products on the basis of physical cutout tohvsical measures method}. a) b) The Managing Director has recently been advised that apportioning joint costs using the physical measures method is not always appropriate. Briey discuss this viewpoint prepare calculations to determine the prot or loss earned from each product using two alternatives methods to apportion joint costs. Assess whether each of these two alternative methods represents an improvement on the rm's current system. (23 marks) Another division of the rm has just completed the implementation of Activity Based Costing (ABC). previous to this the division used a Traditional Costing System (assigned overheads on the basis of labour hours). To facilitate the smooth transition to the new system, cost information for the division's three products for last month was determined both under the previous costing system and the new ABC system as summarised in the table below. On receipt of this information the Managing Director expressed some concerns: firstly he questioned why the overall profitability was the same under both systems and secondly he queried how ABC can actually be of benefit to the firm. Product Product Product Total Alpha Beta Delta Unit cost calculated under E45 E50 E60 traditional costing basis Profitability of products under (45,000 (60,000 E22,000 (127,000 traditional costing basis Unit cost calculated under E32 656 E70 ABC basis Profitability of products under E82,000 653,000 (E8,000) (127,000 ABC basis loss Write a report to the Managing Director explaining the difference between the two costing approaches and addressing the concerns that he raised. (14 marks) c) Discuss how probability information enables the management accountant to support managerial decision-making under conditions of uncertainty