Task: Question Answering
Input (English): Problem: if 60 % of a number is equal to one half of another number , what is the ratio of first number to the second number ? 
Options: a ) 4 : 5 , b ) 5 : 6 , c ) 6 : 5 , d ) 5 : 4 , e ) 2 : 5
Output (English): b