document.write( "Question 509643: I am having a problem setting this question up to solve \r
\n" ); document.write( "\n" ); document.write( "Jolene invests her savings in two bank accounts, one paying 3 percent and the other paying 8 percent simple interest per year. She puts twice as much in the lower-yielding account because it is less risky. Her annual interest is 6076 dollars. How much did she invest at each rate?
\n" ); document.write( " thanks :)
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Algebra.Com's Answer #341544 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
Let S = the total amount of Jolene's savings.
\n" ); document.write( "She invests two thirds of S in the bank that pays 3% interest and the remaining one third of S in the bank that pays 8% interest.
\n" ); document.write( "So we can write the equation that relates the interest amounts earned at each bank to the total amount of interest earned ($6,076).
\n" ); document.write( "\"%282%2F3%29S%280.03%29+%2B+%281%2F3%29S%280.08%29+=+6076\" It will make the calculations a little easier if we change the interest rates to fractions.
\n" ); document.write( "\"3\"% = \"0.03\"=\"3%2F100\" and \"8\"%=\"0.08+=+8%2F100\"
\n" ); document.write( "\"%282%2F3%29S%283%2F100%29%2B%281%2F3%29S%288%2F100%29+=+6076\" Now simplify the left side of the equation.
\n" ); document.write( "\"2S%2F100+%2B+8S%2F300+=+6076\" Add the fractions.
\n" ); document.write( "\"%286S%2B8S%29%2F300+=+6076\" Simplify.
\n" ); document.write( "\"14S%2F300+=+6076\" Multiply both sides by 300.
\n" ); document.write( "\"14S+=++1822800\" Divide both sides by 14.
\n" ); document.write( "\"S+=+130200\"
\n" ); document.write( "Jolene's total invested savings is:
\n" ); document.write( "$130,200
\n" ); document.write( "Two thirds of this are invested at 3%, so...
\n" ); document.write( "\"0.03%282%2F3%29%28130200%29+=+%283%2F100%29%282%2F3%29%28130200%29\"=\"%282%2F100%29%28130200%29+=+2604\"
\n" ); document.write( "$2,604 interest was earned at 3% per annum.
\n" ); document.write( "One third of $130,200 was invested at 8%, so...
\n" ); document.write( "\"0.8%281%2F3%29%28130200%29+=+%288%2F100%29%281%2F3%29%28130200%29%29\"=\"%288%2F300%29%28130200%29+=+3472\"
\n" ); document.write( "$3,472 interest was earned at 8% per annum.
\n" ); document.write( "The the total interest is:
\n" ); document.write( "\"2604%2B3472+=+6076\" = $6,076
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