Task: Question Answering
Input (English): Problem: the salaries of a and b together amount to $ 500 . a spends 90 % of his salary and b , 80 % of his . if now , their savings are the same , what is a ' s salary ? 
Options: a ) $ 50 , b ) $ 150 , c ) $ 69 , d ) $ 34 , e ) $ 52
Output (English): d