document.write( "Question 501952: Jan invested $1200 at a certain simple interest rate and $2200 at a rate of 3% higher. Her annual earnings were $253. Find the two interest rates if she earned $121 more on the larger investment than on the smaller.\r
\n" );
document.write( "\n" );
document.write( "what is the process and answer of this word problem? explain \n" );
document.write( "
Algebra.Com's Answer #338730 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! Jan invested $1200 at a certain simple interest rate and $2200 at a rate of 3% higher. Her annual earnings were $253. Find the two interest rates if she earned $121 more on the larger investment than on the smaller. What is the process and answer of this word problem? explain \n" ); document.write( "** \n" ); document.write( "let x=interest rate for $1200 investment \n" ); document.write( "x+.03=interest rate for $2200 investment \n" ); document.write( ".. \n" ); document.write( "2200(x+.03)+1200x=253 \n" ); document.write( "2200x+66+1200x=253 \n" ); document.write( "3400x=187 \n" ); document.write( "x=.055 or 5.5% \n" ); document.write( "x+.03=.085 or 8.5% \n" ); document.write( "Check: \n" ); document.write( "Interest earned at $2200=.085*2200=187 \n" ); document.write( "Interest earned at $1200=.055*1200=66 \n" ); document.write( "difference=187-66=$121 \n" ); document.write( ".. \n" ); document.write( "ans: \n" ); document.write( "Annual interest rate for larger $2200 investment = 8.5% \n" ); document.write( "Annual interest rate for smaller $1200 investment = 5.5% \n" ); document.write( " |