Murray electronics sales in May were 2,000 units @ $52 and 2,100 @ $54 in June. Sales projections are as follows: July an increase of 2% from June Sales (the sale price will be the same as June) August 2,200 units @$54 September an increase of 2% from August Sales (the sale price will be the same as August) INVENTORY POLICY Murray inventory policy is to maintain an ending inventory of 40% of next month sales. October Sales are expected to be 2,250 units. Actual inventory is 820 units. Each unit cost is $30. ACCOUNTS PAYABLE POLICY Murray pays 70% of merchandise purchases in cash and the remaining one month later. CALCULATE UNITS TO BE PURCHASED IN AUGUST.