document.write( "Question 907386: An actor ivvests some money at 5%, and $4800 more than three times the amount at 8%. The total annual interest earned from the investment is $43860. How much did he invest at each amount?
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Algebra.Com's Answer #550330 by richwmiller(17219)\"\" \"About 
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Total yearly interest for the two accounts is: $43860
\n" ); document.write( "x=3y+4800
\n" ); document.write( "0.05*x+0.08*y=43860
\n" ); document.write( "Substitute for x
\n" ); document.write( "0.05*(3y+4800)+0.08*y=43860
\n" ); document.write( "Multiply out
\n" ); document.write( "0.15y+240+0.08*y=43860
\n" ); document.write( "Combine like terms.
\n" ); document.write( "0.15y+240+0.08*y=43860
\n" ); document.write( "0.15y+0.08*y=43860-240
\n" ); document.write( "0.23*y=43620
\n" ); document.write( "Isolate y
\n" ); document.write( "0.23*y=43620
\n" ); document.write( "y=43620/0.23
\n" ); document.write( "y=$189652.174 at 8%
\n" ); document.write( "rounded off
\n" ); document.write( "y=$189652.17 at 8%
\n" ); document.write( "x=3y+4800
\n" ); document.write( "x=3*189652.174+4800
\n" ); document.write( "x=568956.522+4800
\n" ); document.write( "x=$573756.522 at 5%
\n" ); document.write( "rounded off
\n" ); document.write( "x=$573756.52 at 5%\r
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