Question

A contractor and a subcontractor are both working on a specific job. The subcontractor gives the contractor an invoice for $500 which includes $250 in labor to the contractor. The contractor takes the subcontractor invoice and adds $300 to include profit and overhead costs as well as an additional $400 in labor performed by the contracting company. A final invoice of $1450 is submitted to the government for payment. How do you compute the percentage of the job worked for the contractor and subcontractor?