Task: Question Answering
Input (English): Problem: mary works in a restaurant a maximum of 80 hours . for the first 20 hours , she is paid $ 8 per hour . for each overtime hour , she is paid at a rate which is 25 % higher than her regular rate . how much mary can earn in a week ? 
Options: a ) 600 , b ) 720 , c ) 760 , d ) 620 , e ) 700
Output (English): c