Let us suppose the system has two stages
Stage 1: They can produce 7.5 units per hour, there are two machines, and the yield is 70%
Stage 2: They can produce 6 units per hour, there are three machines, and the yield is 85%
How many units can this system produce in one year, if it operates 8 hours a day, 7 days a week, and 50 weeks a year.