Final answer:
To calculate inventory turnover, we need the cost of goods sold, which is not provided in the question.
Step-by-step explanation:
Inventory turnover is a financial ratio that measures how efficiently a company is managing its inventory. To calculate the inventory turnover, we divide the cost of goods sold (COGS) by the average inventory. However, in this case, we are given limited information, as we only know the selling price of the motorbike, not the cost of goods sold. Therefore, it is not possible to determine the inventory turnover based on the given information. The correct answer is D) Not enough information to determine.