Task: Question Answering
Input (English): Problem: shawn invested one half of his savings in a bond that paid simple interest for 2 years and received $ 500 as interest . he invested the remaining in a bond that paid compound interest , interest being compounded annually , for the same 2 years at the same rate of interest and received $ 555 as interest . what was the value of his total savings before investing in these two bonds ? 
Options: a ) 2,000 , b ) 2,500 , c ) 4,000 , d ) 5,000 , e ) 6,000
Output (English): b