Task: Question Answering
Input (English): Problem: a cyclist rides a bicycle 8 km at an average speed of 11 km / hr and again travels 11 km at an average speed of 8 km / hr . what is the average speed for the entire trip ? 
Options: a ) 8.58 , b ) 8.76 , c ) 9.04 , d ) 9.12 , e ) 9.25
Output (English): c