Task: Question Answering
Input (English): Problem: a typist uses a sheet measuring 20 cm by 30 cm lenghtwise . if a margin of 2 cm is left on each side and a 3 cm margin on the top and bottom , then what is the percentage of page used by the typist ? 
Options: a ) 62 % , b ) 63 % , c ) 64 % , d ) 65 % , e ) 66 %
Output (English): c