Walker Company prepares monthly budgets. The current budget plans for a September ending merchandise inventory of 19,000 units. Company policy is to end each month with merchandise inventory equal to 10% of budgeted sales for the following month. Budgeted sales and merchandise purchases for the next three months follow. The company budgets sales of 190,000 units in October. July August September Sales (Units) Purchases (Units) 210,000 320,000 310,000 221,000 319,000 298,000 Prepare the merchandise purchases budgets for the months of July, August, and September.