Task: Question Answering
Input (English): Problem: a car traveled 75 % of the way from town a to town b at an average speed of 75 mph . the car traveled at an average speed of v mph for the remaining part of the trip . the average speed for the entire trip was 50 mph . what is v in mph ? 
Options: a ) 30 , b ) 35 , c ) 25 , d ) 40 , e ) 45
Output (English): c