A vehicle uses 9.5 gallons of gas to travel 247.5 miles. How far can the vehicle travel on 15.8 gallons of gas? Round your answer to 3 significant digits.
247.5 / 9.5 = N / 15.8 where N is the miles traveled on 15.8 gallons.......cross-multiply
9.5N = (247.5)(15.8) divide both sides by 9.5
N = 411.6 miles = 412 (rounded)
