document.write( "Question 553296: How long will it take money to double if it invested at the following rates:
\n" ); document.write( "(1) 5.9% compounded quarterly.
\n" ); document.write( "(2) 6.3% compounded quarterly. \r
\n" ); document.write( "\n" ); document.write( "Thanks! \r
\n" ); document.write( "\n" ); document.write( "SuperDuper \n" ); document.write( "
Algebra.Com's Answer #360779 by mananth(16946)\"\" \"About 
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Principal P = 100
\n" ); document.write( "Amount= 200
\n" ); document.write( "years=n
\n" ); document.write( "compounded (t) 4
\n" ); document.write( "Rate = 5.9 0.01
\n" ); document.write( "Amount = P*((n+r)/n)^n
\n" ); document.write( "
\n" ); document.write( "200 = 100 *( 1 + 0.01 )^ n*t
\n" ); document.write( "2 = *( 1 + 0.01 )^ n* 4
\n" ); document.write( "ln 2 = 4 n *ln 1.01
\n" ); document.write( " 0.69 = 4 0.01 *n
\n" ); document.write( " 11.83 = n
\n" ); document.write( "11.83 years
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\n" ); document.write( "Principal P = 100
\n" ); document.write( "Amount= 200
\n" ); document.write( "years=n
\n" ); document.write( "compounded (t) 4
\n" ); document.write( "Rate = 6.3 0.02
\n" ); document.write( "Amount = P*((n+r)/n)^n
\n" ); document.write( "
\n" ); document.write( "200 = 100 *( 1 + 0.02 )^ n*t
\n" ); document.write( "2 = *( 1 + 0.02 )^ n* 4
\n" ); document.write( "ln 2 = 4 n *ln 1.02
\n" ); document.write( " 0.69 = 4 0.02 *n
\n" ); document.write( " 11.09 = n \r
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