Question

a car travels 172 miles using 7 gallons of gas how far can the car travel using 42 gallons of gas?

Answer 1

172 : 7 = 24,5714286
42 x 24,5714286 =  1032

Answer 2

the equations are directly proportional

thus, we multiply the equation by by 6

= 176 x 6 = 7 x 6

= 1056 = 42

thus, with a car can treavel 1056 miles with 42 gallons of gas