March 3 Purchased $1,140 of merchandise froe Greenworld conpany with credit teras of 2/15, n/60, invoice dated March 3. and FoB shipping point. March 4 Paid 565 cash for shipping charges on the March 3 purchase. March 5 Returned to Greenworld unacceptable erechandise that had an invoice price of $140. March 18 Paid GreenWorld for the March 3 purchase, net of the discount and the returned aerchandise. March 19 Purchased $520 of merchandise from Peoplefirst Corporation with credit terns of 1/10, n/30, invosce dated March 19, and Foe desfination. March 21 After negotiations, received from Peoplefirst a $20 allowance (for scuffed aerchandise) toward the $520 osed on the March 19 purchase. March 29 Sent check to Peoplefirst paying for the March 19 purchase, net of the allowance and the discount