document.write( "Question 1202792: How long will it take a sum of money to double itself if interest 12(1/2)% per annum \n" ); document.write( "
Algebra.Com's Answer #837897 by mananth(16946)\"\" \"About 
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\n" ); document.write( "Let Principal be P
\n" ); document.write( "doubles in how many years =2P\r
\n" ); document.write( "\n" ); document.write( "Interest = 2P-P=P\r
\n" ); document.write( "\n" ); document.write( "Rate = 12.5% = 0.125\r
\n" ); document.write( "\n" ); document.write( "I = P * n*r\r
\n" ); document.write( "\n" ); document.write( "P = P*n *0.125\r
\n" ); document.write( "\n" ); document.write( "n= 1/0.125\r
\n" ); document.write( "\n" ); document.write( "= 8 years\r
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