Calculating credit purchases from incomplete records Steps:

• Record opening trade payables as starting liability: $9,000 owed.
• Add credit purchases made during the year (unknown amount, P).
• Subtract cash payments to credit suppliers: $35,000.
• Resulting closing trade payables: $5,000 owed.
• Solve equation: $9,000 + P -$35,000 = $5,000, so P =$31,000 (credit purchases).

Not enough information: The data allows calculation of credit purchases ($31,000), but total purchases require additional details on cash purchases, which are not provided.

Final answer: Not enough information.