Schedule of Required Purchases. Tryler Company anticipates credit sales for the first four months of next year as follows: January, $25,000; February, $35,000; March, $20,000: April, 530.000. Beginning inventory is $3,500. The cost of merchandise averages 70 percent of sales. The firm wants ending inventory to equal 20 percent of expected sales for next month. Prepare a schedule of required purchases for each month and for the quarter.