Please answer the full question (Yes i will rate you, thank you)

1) Xerox Inc. has a sales budget given below for one of its Machines manufactured by Xerox Canada Inc.: The inventory of finished goods at the end of each month must equal 20% of the next month's sales. However, on December 31 , the finished goods inventory totaled only 16,000 units. Required: Prepare a production budget for the 3rd Quarter