Task: Question Answering
Input (English): Problem: if daily wages of a man is 4 times to that of a woman , how many men should work for 25 days to earn rs . 14400 ? given that wages for 40 women for 30 days are rs . 21600 . 
Options: a ) 12 , b ) 4 , c ) 6 , d ) 8 , e ) 20
Output (English): d