a) As the new management accountant employed by a company you have been asked to supply financial results by product line to help in marketing decision making. The following account was produced for the year ended 30th June 2022. GH000 GH000 Sales 1,200 Cost of goods sold: Materials 500 Wages 300 Production expenses 150 Marketing cost 100 1,050 Net profit 150 A statistical analysis of the figures shows the following variable element in the costs: (%) Materials 90 Wages 80 Production expenses 60 Marketing costs 70 Below is given, as percentages, the apportionment of the sales, and the variable elements of the costs among the five products manufactured. Products Total A B C D E Sales 30 15 7 28 20 100 Materials 40 20 10 20 10 100 Wages 15 25 10 25 25 100 Production expenses 30 10 10 30 20 100 Marketing costs 10 30 20 30 10 100 From the information given: a) Prepare a statement for the year showing contribution by products and comment on these contributions. b) Calculate the following: i) The break-even sales level ii) The orders of sales preference for additional orders to maximize contribution as a percentage of sales. iii) A revised sales mix of the GH1,200,000 sales to maximize contribution assuming that existing sales by products can only be varied 10% either up or down. iv) A product mix to maximize contribution if manpower availability were reduced by 10% but the product mix could be varied by up to 20%. v) The percentage commission which could be offered to an overseas agent on an order of GH30,000 worth each of product A, C and E and obtain a 20% contribution on the total sales value