Answer: 17.04 km/L
Step-by-step explanation:
Given: An automobile can travel 40.0 miles on one gallon of gasoline
That is 40 miles/ gallon
Now using the conversion factor :
1 mile = 1.61 km
Thus 40 miles =

Alsousing the conversion factor
1 gallon = 3.78 L
Thus
will be

Thus the answer is 17.04 km/L.