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 $ 400 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 $ 605 as interest . what was the value of his total savings before investing in these two bonds ? 
Options: a ) 3000 , b ) 5000 , c ) 2000 , d ) 4000 , e ) 6000
Output (English): c