Y Limited manufactures three products, Exe, Wye and Zed. The following budgeted information is available for the month of July 2017: Per unit Selling price Direct material at $4 per kilo Direct labour at $8 per hour Machine hours Variable overhead Fixed overhead Exe $96.00 7 kilos 3 hours 1.00 $2.40 $10.00 Wye $128.00 9 kilos 4 hours 2.50 $3.20 $25.00 Zed $140.00 15 kilos 4 hours 5.00 $3.20 $50.00 Maximum monthly demand 100 units 120 units 60 units Fixed overheads are forecast to be $7000 per month. Y Limited has enough resources and capacity to meet the maximum monthly demand. REQUIRED (a) Calculate the contribution per unit for each product. (b) Prepare a statement to show the maximum contribution and maximum profit that Y Limited can earn for the month of July 2017