Preparation of merchandise purchases budgets ( for 3 periods) . Formworks comapny prepares monthly budgets. The current budget plans for a September ending inventory of 15,000 units. company policy is to end each month with merchandise inventory equal to a specified percent of budgeted sales for the following month. Budgeted sales and merchandise purchases for the 3 most recent months follow. 1. prepare the merchadise budget for the months of July, August, and September. 2. compute the ratio of ending inventory to the next month's sales for each budget prepared in part 1. 3. how many units are budgeted for sale in October?    Sales: July - 120,000, Aug - 210,000, Sept - 180,000. Purchases(units) July - 138,000, August - 204,000, September - 159,000.