document.write( "Question 454395: you earn $85 on an investment that pays 7% for 18 months. How much did you invest ? \n" ); document.write( "
Algebra.Com's Answer #312014 by stanbon(75887)\"\" \"About 
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you earn $85 on an investment that pays 7% for 18 months. How much did you invest ?
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\n" ); document.write( "I = Prt
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\n" ); document.write( "P = I/(rt)
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\n" ); document.write( "P = 85/(0.07*1.5)
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\n" ); document.write( "P = $809.52 (amount invested)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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