...Dodge Caravan can hold? a driver and six passengers. The biology department is taking a total of 95 people on a field trip. A total of 20 of the 95 people are available to drive. Not all potential drivers will be needed. The college wants to use twice as many Caravans as Explorers because the Caravans get better gas mileage. How many of each kind of vehicle are needed? Show work thanks.