You are running a fuel economy study. One of the cars you find is blue. It can travel 28 and one half miles on 1 and one fourth gallons of gasoline. Another car is red. It can travel 20 and four fifths miles on four fifths gallon of gasoline. What is the unit rate for miles per gallon for each​ car? Which car could travel the greater distance on 1 gallon of​ gasoline?