Gas mileage is the number of miles you can drive on a gallon of gasoline. a test of a new car results in 350 miles on 20 gallons of gas. how far could you drive on 50 gallons of gas? what is the cars gas mileage?

Answer=875miles      17.5miles per gallon

 350miles     x miles
=
20gallons    50gallons

cross multiply
20x=17500
divide both sides by 20
x=875

875 miles can be traveled with 50 gallons of gas.

To find gas milage, which is essentially miles per gallon, simply divide the number of miles by the number of gallons

350miles   20gallons

350/20=17.5 miles per gallon

If the diameter is 8 than the radius is 4 because 2r or 2*radius equals the diameter. 4*2=8. 8/2=4.