Task: Question Answering
Input (English): Problem: bhavan travelled for 20 hours . he covered the first half of the distance at 50 kmph and remaining half of the distance at 40 kmph . find the distance travelled by bhavan ? 
Options: a ) 888.89 , b ) 788.89 , c ) 899.89 , d ) 688.89 , e ) 899.99
Output (English): a