Task: Question Answering
Input (English): Problem: in 1970 there were 8,902 women stockbrokers in the united states . by 1978 the number had increased to 21,947 . approximately what was the percent increase ? 
Options: a ) 45 % , b ) 125 % , c ) 147 % , d ) 150 % , e ) 225 %
Output (English): c