To determine how far the car can travel on 25 gallons of gas, we first need to find out how many miles the car can travel per gallon. We can do this by dividing the total miles traveled by the number of gallons used.
Calculating miles per gallon (MPG):
340 miles ÷ 20 gallons = 17 miles per gallon
This means the car travels 17 miles for every gallon of gas. Now, we can calculate the distance the car can cover with 25 gallons by multiplying the miles per gallon by the new number of gallons:
17 miles/gallon × 25 gallons = 425 miles
Therefore, the car can travel 425 miles on 25 gallons of gas.