
Answer:
Actual output would be 4,845 cranks
Explanation:
Production per week = Production per hour × Hours per day × Production per day
                  = 100 × 12 × 5
                  = 6,000 cranks
Maintenance adjusted output = Production per week × Available time
                         = 6,000 × 95%
                         = 5,700 cranks
Actual output = Maintenance adjusted output  × Efficiency level
            = 5,700 × 85%
           = 4,845 cranks