Three products A, B, and C are produced using four types of machines R1, R2, R3, and R4. The and 1 of each other type. One worker is responsible from each machine---a total of 6 workers. 5 days a week. How many minutes of additional labor are needed to eliminate the bottleneck resource? R1 - 20 min R2 - 10 min R4 - 15 min Requirements for A-Raw material: $10/unit, Purchased parts: $20/unit R2-40 min R4 - 30 min R3 -20 min Three products A, B, and C are produced using four types of machines R1, R2, R3, and R4. The and 1 of each other type. One worker is responsible from each machine---a total of 6 workers. 5 days a week. How many minutes of additional labor are needed to eliminate the bottleneck resource? R1 - 20 min R2 - 10 min R4 - 15 min Requirements for A-Raw material: $10/unit, Purchased parts: $20/unit R2-40 min R4 - 30 min R3 -20 min