Task: Question Answering
Input (English): Problem: 15 people went to a hotel for combine dinner party 10 of them spent rs . 50 each on their dinner and rest spent 4 more than the average expenditure of all the 15 . what was the total money spent by them . 
Options: a ) 1628.4 , b ) 1534 , c ) 780 , d ) 1496 , e ) none of these
Output (English): c