Walker Company prepares monthly budgets. The current budget plans for a September ending merchandise inventory of 21,000 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 210,000 units in October. Sales (Units) Purchases (Units) July 210,000 218,000 August 290,000 288,000 September 270,000 264,000 Prepare the merchandise purchases budgets for the months of July, August, and September.