Task: Question Answering
Input (English): Problem: two cyclist start from the same places in opposite directions . one is going towards north at 30 kmph and the other is going towards south 40 kmph . what time will they take to be 50 km apart ? 
Options: a ) 1.32 hr , b ) 0.714 hrs , c ) 3.231 hrs , d ) 0.515 hrs , e ) 6.214 hrs
Output (English): b