Final answer:
The new truck can travel 840 miles on 60 gallons of gas. The car's gas mileage is 14 miles per gallon.
Step-by-step explanation:
To find out how far the new truck can travel on 60 gallons of gas, we can use a proportion. We know that the truck can travel 350 miles on 25 gallons of gas, so we set up the proportion 350 miles / 25 gallons = x miles / 60 gallons. To solve for x, we can cross-multiply and then divide: 350 miles * 60 gallons = 25 gallons * x miles. Simplifying this equation, we get 21,000 = 25x. Dividing both sides by 25, we find that x = 840 miles. Therefore, the new truck can travel 840 miles on 60 gallons of gas.
To find the car's gas mileage, we can divide the distance traveled by the amount of gas used. In this case, the car traveled 350 miles on 25 gallons of gas, so the gas mileage is 350 miles / 25 gallons = 14 miles per gallon.