document.write( "Question 883311: a man invested $3,500, part of it at a yearly rate of 4% and the rest at 5%. He received a total annual interest of $153. How much did he invest at each rate? \n" ); document.write( "
Algebra.Com's Answer #534498 by Fombitz(32388)\"\" \"About 
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1.\"X%2BY=3500\"
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\n" ); document.write( "\"0.04X%2B0.05Y=153\"
\n" ); document.write( "2.\"4X%2B5Y=15300\"
\n" ); document.write( "Multiply eq. 1 by -4 and add to eq. 2,
\n" ); document.write( "\"-4X-4Y%2B4X%2B5Y=-14000%2B15300\"
\n" ); document.write( "\"Y=1300\"
\n" ); document.write( "Then from eq. 1,
\n" ); document.write( "\"X=3500-1300\"
\n" ); document.write( "\"X=2200\"
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