You are leaving a lot of variables out... Are you talking single axle trucks, ?Tandems..?? Yards, or tons makes it easier to give a person an idea.
How far will the truck have to haul it, and what type of material, and type of borrow pit. Digging a hole, digging back into a bank..?
You can cut down on load time, if digging into a bank. Simply build yourself a bench to work off of, as high as the top of the bed of the truck you will be loading. Dig off to the side of the truck as near as possible, and no more than a 90 degree angle, thus cutting down on swing time.
Plus, sitting that high, you can double the amount of the bucket capacity. Sitting that high, you can pull straight into the bank, and not having to lift up and over the side, just lift a bit, and swing over the truck, and dump. You're more limited to the weight, and tipping forward, depending on how far you have to reach out to dump. Especially with tandems. Unless you keep the face of the cut pretty well at 90 degrees, 4 to 5 feet can make a big difference.
And if you need to hire the truck, most tandem size or larger around here did charge $75/$85 per hour, and that is when fuel was a lot cheaper.
On the other hand, I've included a picture of a pad I built for my new horsebarn. You're looking at approx. 700 loads/2800 tons of bank run material, hauled on that little Chevy dump truck sitting there. I hauled another 35 loads to level up a pad for a new shop.
Material was $1.00 per ton, and took right at $4.00 worth of gas to make the 4 mile round trip. I could load all day on less than 10 gallons of gas in my old backhoe. I calculated it up to be right at $2.50 per ton hauled.
It took 61 days, to load, haul spread, and compact that approx. 3,000 tons of fill. I'm retired, so that was a huge help. My time, versus paying someone else to do it came in to play.
I sold the backhoe, for right at what I had in it, so that helped a bunch too, on the over all cost. In my particular case, it was well worth it, to do it myself.