Answer:
Explanation:
Set this up as a ratio, since it's easiest to solve it this way. Put your miles on the top of the ratio and gallons on the bottom:

This ratio says that Jon gets 35.5 miles per 1 gallon of gas. We can use that ratio now, along with another, to solve for the number of miles he drove if he used .3 gallons of gas:

Cross multiply to solve:
1x = 35.5(.3) so
x = 10.65 miles