Task: Question Answering
Input (English): Problem: if a lends rs . 4000 to b at 10 % per annum and b lends the same sum to c at 11.5 % per annum then the gain of b in a period of 3 years is ? 
Options: a ) 112.5 , b ) 122.5 , c ) 132.5 , d ) 114.5 , e ) 180
Output (English): e