Task: Question Answering
Input (English): Problem: a retailer sold 2 houses at each $ 15000 . on 1 st house he got 20 % profit and on 2 nd house he loss 5 % then find his net profit or loss ? 
Options: a ) 10 % , b ) 9 % , c ) 14 % , d ) 15 % , e ) 12 %
Output (English): c