A red dump truck and a blue dump truck haul dirt to a construction site. The red dump truck hauls 6.5 tons of dirt to a building site. A blue dump truck holds two-thirds the amount the red dump truck holds. The red dump truck dumps 2 full loads of dirt and the blue dump truck dumps 3 full loads of dirt at the construction site.
How many tons of dirt did the two dump trucks deliver to the construction site?