Task: Question Answering
Input (English): Problem: the percentage profit earned by selling an article for rs . 1620 is equal to the percentage loss incurred by selling the same article for rs . 1280 . at what price should the article be sold to make 25 % profit ? 
Options: a ) 3000 , b ) 1812.5 , c ) 2000 , d ) 5600 , e ) 3400
Output (English): b