document.write( "Question 664318: in what time will a sum of money double itself at 5 % simple interest per annum? \n" ); document.write( "

Algebra.Com's Answer #413238 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "growing $\"5\"$ %= $\"5%2F100=0.05\"$ per year and it needs to reach $\"100\"$ %= $\"100%2F100=1\"$ to be double.
\n" ); document.write( "Therefore, $\"0.05x+=1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x+=1%2F0.05\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x+=20\"$ years \n" ); document.write( "

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