Task: Question Answering
Input (English): Problem: a car traveled 560 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. if the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city ?
Options: a. 9, b. 16, c. 21, d. 22, e. 27
Output (English): a