Question 20 (20 points) The John Equipment Company estimates its carrying cost at 15% and its ordering cost at $9 per order. The estimated annual requirement is 48,000 units at a price of $4 per unit. Include the formulas and show your work for each part. Refer to the rubric for detailed evaluation. Required: 1. What is the most economical number of units to order? 2. How many orders should be placed in a year? 3. How often should an order be placed