Task: Question Answering
Input (English): Problem: the balance of a trader weighs 10 % less than it should . still the trader marks up his goods to get an overall profit of 20 % . what is the mark up on the cost price ? 
Options: a ) 40 % , b ) 8 % , c ) 25 % , d ) 16.66 % , e ) 9 %
Output (English): b