Question

A motorist traveled 311 miles on 12 gallons of gas. To the nearest tenth, how many miles can the motorist travel on one gallon of gas?

Answer 1

Number of miles that can be traveled on one gallon of gas=311/12
                                                                                           =25.92miles
                                                                                 =25.9miles(to the nearest tenth)

Answer 2

we know that
by using proportion
$\frac{311 miles}{12 gallons} = \frac{x miles}{1 gallon} \\ x= \frac{31.1}{12} \\ x=25.9 miles$

the answer is
$25.9 miles$