An article passes through five hand operations as follows: Operation No. Time per article Grade of worker Wage rate per hour 1 15 minutes Rs. 0.65 2 25 minutes B Rs. 0.50 3 10 minutes Rs. 0.40 4 30 minutes D Rs. 0.35 5 20 minutes E Rs. 0.30 The factory works 40 hours a week and the production target is 600 dozens per week. Prepare a statement showing for each operation and in total the number of operators required, the labour cost per dozen and the total labour cost per week to produce the total targeted output