Task: Question Answering
Input (English): Problem: a can do a work in 8 days . b can do the same work in 4 days . both a & b together will finish the work and they got $ 1000 from that work . find their shares ? 
Options: a ) 600,400 , b ) 500,500 , c ) 400,200 , d ) 800,200 , e ) 550,450
Output (English): c