Task: Question Answering
Input (English): Problem: thirty percent of the members of a swim club have passed the lifesaving test . among the members who havenotpassed the test , 5 have taken the preparatory course and 30 have not taken the course . how many members are there in the swim club ? 
Options: a ) 60 , b ) 80 , c ) 50 , d ) 120 , e ) 140
Output (English): c