The car needs 15 gallons of gasoline to travel 300 miles.

For 1 mile it needs 15/300 gallons.

If the car has to cover 430 miles the gallons of gasoline needed is 430*(15/300) = 21.5

**The car needs 21.5 gallons to travel 430 miles.**

The car needs 15 gallons of gasoline to travel 300 miles.

For 1 mile it needs 15/300 gallons.

If the car has to cover 430 miles the gallons of gasoline needed is 430*(15/300) = 21.5

**The car needs 21.5 gallons to travel 430 miles.**