Task: Question Answering
Input (English): Problem: if 40 % of a number is equal to 2 / 3 of another number , what is the ratio of first number to the second number ? 
Options: a ) 5 / 3 , b ) 3 / 5 , c ) 3 / 7 , d ) 5 / 7 , e ) 7 / 9
Output (English): a