Schedules for Purchases and Payments. Del's Discount Store's sales in November and December und its projected sales for the next four months are as follows: November, $150,000: December $200,000; January, $120,000: February, $80,000; March, $100,000; and April, $110,000. Cost of goods sold averages 60 percent of sales. Del wants ending inventory each month to equal 30 percent of expected sales at cost for next month. Eighty percent of purchases are paid for in the month following the month of purchase and 20 percent in the second month following the month of purchase. Required: Prepare schedules for January, February, March, and the quarter showing:

a. Cost of required purchases.

b. Payment for purchases.