Car A is rated at 34 ​mi/gal (miles per​ gallon) for city driving and 30 ​mi/gal for highway driving. Car B is rated at 27 ​mi/gal city and 37 ​mi/gal highway. How many gallons of gas would each vehicle consume for the following amounts of​ driving? ​(a) 300 mi of city driving plus 100 mi of highway driving
​(b) 100 mi of city driving plus 300 mi of highway driving