Task: Question Answering
Input (English): Problem: a technician makes a round - trip to and from a certain service center by the same route . if the technician completes the drive to the center and then completes 20 percent of the drive from the center , what percent of the round - trip has the technician completed ? 
Options: a ) 60 , b ) 50 , c ) 40 , d ) 70 , e ) 45
Output (English): a