Task: Question Answering
Input (English): Problem: two trains start from same place at same time at right angles to each other . their speeds are 36 km / hr and 48 km / hr respectively . after 30 seconds the distance between them will be ? 
Options: a ) 270 mts , b ) 190 mts , c ) 100 mts , d ) 500 mts , e ) 110 mts
Output (English): d