Between August 1 and September 10, 1986, revenue from the Company's reported insurance restoration projects supposedly aggregated $4,957,920, including $1,940,213 through joint ventures. As of September 30, 1986, the Company allegedly was working on 13 contracts aggregating $24,362,000 of which seven, aggregating $15,068,000, were through joint ventures. The restoration work was accounted for under the percentage of completion method of accounting. Typically the Company's joint venture partners arranged for the financing necessary to undertake the restoration projects (such as short-term bank loans). This financing supposedly covered the costs of materials and supplies, employee transportation and lodging costs, payroll and other expenses estimated to be incurred before the first progress payment was received from the insurance adjuster (generally, after approximately 25% of the work had supposedly been performed). The Company was primarily liable for the debt and the joint venturer was secondarily liable.

1. what does advances on join ventures represent?

explain in paragraph.