document.write( "Question 1043189: How long will it take $500 to Double itself, if it is invested at 8% annual interest rate compounded quarterly ?
\n" ); document.write( "Set up and solve using an algebraic equation..
\n" ); document.write( "Than you for your help :)
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Algebra.Com's Answer #658293 by Alan3354(69443)\"\" \"About 
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How long will it take $500 to Double itself, if it is invested at 8% annual interest rate compounded quarterly ?
\n" ); document.write( "Set up and solve using an algebraic equation..
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\n" ); document.write( "The amount doesn't matter.
\n" ); document.write( "FV = PV*(1 + 0.08/4)^(4t) t in years
\n" ); document.write( "FV = 2*PV
\n" ); document.write( "--> 2 = 1.02^(4t)
\n" ); document.write( "4t*ln(1.02) = ln(2)
\n" ); document.write( "t = ln(2)/(4*ln(1.02)) years
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