document.write( "Question 862745: How long does it take for your investment to double in value if it is invested at 4% interest compounded monthly? Compounded continuously? \n" ); document.write( "
Algebra.Com's Answer #519925 by josgarithmetic(39617)\"\" \"About 
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If the investment quantity begins with I, then these happen:\r
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\n" ); document.write( "\n" ); document.write( "Compounding monthly, \"A=I%281%2B0.04%2F12%29%5E%2812%2Ay%29\", using y as the number of years. The value 0.04/12 is the decimalized MONTHLY interest rate. A is the amount of money in the account at time y.\r
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\n" ); document.write( "\n" ); document.write( "Compounding continuously, \"A=Ie%5E%280.04y%29\".\r
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\n" ); document.write( "\n" ); document.write( "Both kinds of compounding about doubling of I will use I=1 and A=1/2, and you would solve for y for both kinds of compoundings.
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