A contractor plans to excavate 4,000 bank cubic yards from a…

A contractor plans to excavate 4,000 bank cubic yards from a site. He needs to have 1,000 compacted cubic yards for the backfill of excavations. The soil test shows that the soil has a bank density of 2,500 pounds per cubic yard, a loose density of 2,000 pounds per cubic yard, and a compacted density of 3,000 pounds per cubic yard. He plans to use a truck that can haul 25 loose cubic yard per load. How many full truckloads of loose excess material should be hauled off the site?