Wiliams Optical inc. is considering a new lean product cell. The present manufacturing approach produces a product in four separate steps. Th production batch sizes are 78 units. The process time for each step is as follows: The time required to move each batch between steps is 15 minutes. In addition, the time to move raw materials to process Step 1 is also 15 minutes, and the time to move completed units from Process Step4 to finished goods inventory is 15 minutes. The new lean layout will allow the company to reduce the batch sizes from 78 units to 5 units. The time required to move each batch between steps and the inventory locations will be reduced tos minutes. The processing time in each step will stay the same. Determine the value-added, non-value-added, and total lead times, and the vatue-added ratio under the present and proposed production approaches. If required, round percentages to one decimal place