Among many operations, Choco, Co. must produce 100,000 parts X and 200,000 parts Y per year. The standard time for parts X and Parts Y on machine A is 6 min., respectively. The standard time to process part X and to process part Y on machine B are 6 min and 15 min, respectively. The plant operates 1,880 hrs per year. Additionally, the following information is given:
Part X routing is A, then B, and then A again. Part Y routing is B, then A, and then B again.
Set up times for parts X and Y are 20 min and 40 min respectively.
Determine the number of B machines to produce parts X and parts Y.