Jareds cat can travel 300 miles on one tank of gas. The gad tank of his car holds 18 gallons, an 1 gallon of gasoline costs $3.50. What is the cost of gas per mile for Jared?
A. $0.17 per mile
B. $0.21 per mile
C. $1.70 per mile
D. $2.10 per mile
Please explain the work you have to do to get the answer