Hello I have a question about P5-35 in the advanced financial accounting book, 11th edition. My question has to do with the additional information provided in the problem. For part 4 of the additional information it says "Detailed analysis of receivables and payables showed that granite owed mortar $16,000 on december 31, 20X7. My question is, what exactly does this statement mean? And how do I apply it in the problem? Thank you very much.