1. GRR Martin Ltd produces three products: Lannister, Stark and Tyrell. All three products include raw material A in their manufacture. During June, the production manager is planning to repair machines that are used to manufacture all three products and as a result, the machines will be available for a total of 5,320 hours of production. Data for each product are as follows: Selling price Material Labour Variable production overhead Lannister /unit 84.00 12.00 28.00 Stark Tyrell /unit /unit 47.60 58.80 2.00 1.50 14.00 14.00 8.40 2.80 11.20 28.00 22.40 16.80 Fixed production overhead Fixed selling & distribution costs Profit 4.00 3.60 2.00 4.40 6.00 9.30 Maximum demand (units in June) 700 400 370 There are no inventories during the month. Fixed production overheads are absorbed on the basis of 5.60 per machine hour. Required: (a) Calculate the amount of resource that restricts production in June. (8 marks) (b) Determine the optimal production plan that will maximise profit for the company. (16 marks) (c) Based on the optimal production plan, calculate total contribution and profit for GRR Martin Ltd. (6 marks) (Total: 30 marks)