Task: Question Answering
Input (English): Problem: the speed of a boat in still water is 15 km / hr and the rate of current is 3 km / hourr . the distance travelled downstream in 24 mins is ? 
Options: a ) 6 km , b ) 7 km , c ) 7.2 km , d ) 8 km , e ) 8.4 km
Output (English): c