Final answer:
The efficiency of the company is calculated by comparing the total available production time in a day to the time taken to create 400 units across 18 workstations. After doing the calculations, the efficiency exceeds 100%, indicating an error in the provided answer choices.
Step-by-step explanation:
To calculate the efficiency of the company's production process, we first need to determine the total available time for production in a day and compare it to the total time taken to produce 400 units.
The company operates a 12-hour shift, which is equivalent to 720 minutes (12 hours × 60 minutes/hour). If it takes 23 minutes to complete all tasks for each unit, it would take a total of 9,200 minutes (400 units × 23 minutes/unit) to produce 400 units. Since there are 18 workstations, operations are likely happening concurrently.
To calculate efficiency, we assume all workstations work simultaneously, meaning we divide the total time by the number of workstations. So, the total time used by all workstations is 9,200 minutes / 18 workstations = 511.11 minutes.
The efficiency can be calculated as the ratio of the productive time to the total available time: (720 / 511.11) × 100, giving us an efficiency of approximately 140.84%. This figure indicates a highly efficient process, likely due to multi-tasking at workstations or a production line setup. Since none of the answer choices match this calculation, it seems there is an error in the question or the answer choices provided.