document.write( "Question 693792: Please help: A person plans to invest three times as much in an account at 3% interest as in an account at 15% annual interest. How much should the person invest in each account to earn a total of $240 in one year?\r
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Algebra.Com's Answer #427609 by ankor@dixie-net.com(22740)\"\" \"About 
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A person plans to invest three times as much in an account at 3% interest as in an account at 15% annual interest.
\n" ); document.write( " How much should the person invest in each account to earn a total of $240 in one year?
\n" ); document.write( ":
\n" ); document.write( "let a = amt invested at 15%
\n" ); document.write( "then
\n" ); document.write( "3a = amt invested at 3%
\n" ); document.write( ":
\n" ); document.write( ".03(3a) + .15a = 240
\n" ); document.write( ".09a + .15a = 240
\n" ); document.write( ".24a = 240
\n" ); document.write( "a = 240/.24
\n" ); document.write( "a = $1000 invested at 15%
\n" ); document.write( "and
\n" ); document.write( "3(1000) = $9000 at 3%
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check this out, find how much interest earned by each investment:
\n" ); document.write( ".15*1000 = 150
\n" ); document.write( ".03*3000 = 90
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\n" ); document.write( "total int 240 \n" ); document.write( "
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