Task: Question Answering
Input (English): Problem: paul and jack are 2 mechanics who work 8 hours per day changing oil in cars at the oil spot . if paul can change oil in 2 cars per hour , and jack can change oil in 3 cars per hour . what is the least number of cars per work day the 2 men can finish ? 
Options: a ) 50 , b ) 40 , c ) 35 , d ) 10 , e ) 90
Output (English): b