In your project, you have decided to use dump trucks to excavate and haul the fill material. The empty weight of a truck is 38 tons. The distance between the borrow and the construction sites is 4 miles, and the road has an average uphill grade of 2.5% when travelling from the borrow site to the construction site. When fully loaded, the truck can carry 20 tons of fill material (LCY). You have investigated that the average tire penetration when the truck is loaded is 1.5 inches