document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1016360>Question 1016360</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How long will it take for a sum of money to double itself at 10% simple interest. </SPAN>\n" );
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document.write( "P = initial deposit<BR>\n" );
document.write( "2P = double that deposit\r<BR>\n" );
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document.write( "r = 0.10 = decimal form of the interest rate<BR>\n" );
document.write( "t = number of years\r<BR>\n" );
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document.write( "A = P*(1+r*t) represents the account balance when using simple interest\r<BR>\n" );
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document.write( "So,<BR>\n" );
document.write( "A = P*(1+r*t)<BR>\n" );
document.write( "2P = P*(1+0.10*t)<BR>\n" );
document.write( "2 = 1+0.10*t<BR>\n" );
document.write( "2-1 = 0.10t<BR>\n" );
document.write( "1 = 0.10t<BR>\n" );
document.write( "t = 1/0.10<BR>\n" );
document.write( "t = 10\r<BR>\n" );
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document.write( "Answer: 10 years <BR>\n" );
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