document.write( "Question 1153871: How long will it take a sum of money to increase threefold if it's invested at 13% compounded quarterly. Round to 2 decimal places. \n" ); document.write( "

Algebra.Com's Answer #776182 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+3A+=+A%2A%28+1+%2B+.13%2F4+%29%5E%28+4t+%29+\"$
\n" ); document.write( " $\"+3+=+1.0325%5E%28+4t+%29+\"$
\n" ); document.write( "Take the log of both sides
\n" ); document.write( " $\"+log%28+3+%29+=+4t%2Alog%28+1.0325+%29+\"$
\n" ); document.write( " $\"+.47712+=+4t%2A.01389+\"$
\n" ); document.write( " $\"+.47712+=+.05556t+\"$
\n" ); document.write( " $\"+t+=+8.58747+\"$
\n" ); document.write( "8.59 yrs
\n" ); document.write( "-------------
\n" ); document.write( "Get a 2nd opinion if needed
\n" ); document.write( " \n" ); document.write( "

\n" );