document.write( "Question 456995: a student invests two sums of money, $500 and $800, at different interest rates, receiving a total of $55 in interest after one year. the $500 investment receives an interest rate 2% lower than the interest rate for the $800 investment. find the interest rate for each investment. \n" ); document.write( "
Algebra.Com's Answer #313575 by mananth(16946)![]() ![]() You can put this solution on YOUR website! let $800 investment be at x% \n" ); document.write( "$500 will be @ (x-2)%\r \n" ); document.write( "\n" ); document.write( ".. \n" ); document.write( "800*x%+500(x-2)% = 55\r \n" ); document.write( "\n" ); document.write( "multiply by 100\r \n" ); document.write( "\n" ); document.write( "800x+500x-1000=5500 \n" ); document.write( "1300x= 5500+1000 \n" ); document.write( "1300x= 6500 \n" ); document.write( "/1300 \n" ); document.write( "x= 5 % for $800 investment \n" ); document.write( "3% for $500 investment \n" ); document.write( " |