Question 798543
10% pa
Target 100%
Period {{{ 100/10 = 10 years}}}


For compound interest:
n years
1.1^n=2
Log of both sides
n log1.1=log2
So {{{n= log2/log1.1}}}
{{{n=.3010/.0414=7.27}}}
7.27 years

Check {{{1.1^7.27=2.0}}}