Final answer:
The company's efficiency is calculated using takt time and the efficiency formula. With a takt time of 2 minutes per unit and all tasks taking 8 minutes at 5 workstations, the efficiency is 80%.
Step-by-step explanation:
To calculate the efficiency of a company's production process, we need to determine the takt time and apply the given efficiency formula. First, we calculate the takt time, which is the ratio of the time available to the customer demand. Since the company must make 30 units per hour, and there are 60 minutes in an hour, the takt time is 60 minutes / 30 units = 2 minutes per unit.
Next, we use the formula for efficiency: Efficiency = (Sum of all task times / (Actual work stations × takt time)) × 100. Given that the total time to complete all tasks is 8 minutes and the company uses 5 workstations, we can substitute these values into our formula:
- Sum of all task times = 8 minutes
- Actual work stations = 5
- Takt time = 2 minutes per unit
Efficiency = (8 minutes / (5 workstations × 2 minutes per unit)) × 100 = (8 / 10) × 100 = 80%.
Therefore, the correct answer is d. 80%.