Aeuropean automobile has a gas mileage of 16km/l .. what is the gas mileage in miles per gallon? . express your answer using two significant figures.

For getting to the answer of this question, one has to know the conversion between kilometer and miles as well as the conversion between gallons and liter.
1 mile = 1.609 km
Then
16 km = 16/1.609 miles
           = 9.94 miles
Again
3.785 liter = 1 gallon
then
1 liter = 1/3.784 gallons
          = 0.26 liter
So
16 km/L = (9.94/0.26) miles per gallon
              = 38.23 miles per gallon.
              = 38 gallons

Logical equivalent of the give question is its contrapositive

Well in order to lose a pound you would have to burn 1,500 calories. the more calories you burn the more weight you lose. in order to lose 2 pounds you would have to run 4 hours and 28 minutes.