Home health aide trades in old car a gas mileage of 18 1/4 miles per gallon. starting with a full tank of gas in her new car she travels 390 7/8 miles it takes 14 3/4 gallons to fuel the tank. How many miles further can she travel on a full tank of gas with the new car if the gas tank hold 30 gallons of gas

The new car travels 247.5 miles more than the old one on 30 gallons of gas.

Step-by-step explanation:

The fuel consumption of the old car was:

The new one can travel a distance of 390 7/8 miles by using 14 3/4 gallons of fuel, therefore the consumption is:

If the tank holds 30 gallons, on the old car the distance would be:

On the new one it will be:

So the new car is able to travel 247.5 miles more than the old one on 30 gallons of gas.

1/800 is the right answer