Task: Question Answering
Input (English): Problem: two boys starts from the same place walking at the rate of 5 kmph and 5.5 kmph respectively in the same direction . what time will they take to be 8.5 km apart ? 
Options: a ) 17 hr , b ) 14 hr , c ) 12 hr , d ) 19 hr , e ) 23 hr
Output (English): a