Task: Question Answering
Input (English): Problem: a fort had provision of food for 150 men for 45 days . after 15 days , 10 men left the fort . the number of days for which the remaining food will last , is : 
Options: a ) 32 , b ) 37 1 / 4 , c ) 42 , d ) 54 , e ) 45
Output (English): a