Task: Question Answering
Input (English): Problem: mrs . evans gave a test to her freshmen economics class , which has 40 students enrolled and 30 of them answered question 1 correctly . if 29 answered question 2 correctly and 10 did not take the test then how many answered both questions correctly ? 
Options: a ) 24 , b ) 27 , c ) 29 , d ) 31 , e ) 33
Output (English): c