Three products A B, and Care produced using four types of machines R1, R2, R2, and R4. The firm awns 2 machines of type R4 and 1 of each other type. Onc worker is responsible from cach machine a total of 5 warkers. Workers are available 10 hrs a day for 5 days a week How many minutes additional labor are needed to climinate the bottleneck resource? R1 - 20 min R2-10 min R1 - 15min A, demand = 10/wk price = $90/unit Requirements for A-Raw material: $10/unit, Purchased parts: $20/unit R2-40 min R4 - 30 min R$ 20 min B, demand = 50/wk price = $100/unit Requirements for B-Raw material: $15/unit, Purchased parts: $15/unit RL - 30 min R3-25 min R4-20min C, demand = 80/wk price = $90/unit Requirements for C-Raw material: $5/unit, Purchased parts: $10/unit Multiple Choice c 200 700 c D 500