With Re-invested income  (income is reinvested into capital)
Pre-requiste: income or dividend is secured.

P/E =     12   9 years for 100% return /  11.1% annual
P/E =     11   8 years for 100% return /  12.5% annual

P/E =    10    7.5 years for 100% return / 13.3% annual
P/E =    9     7 years for 100% return  / 14.2% annual
P/E =   8      6 years for 100% return / 16.6% annual
P/E =  7       5.2 years for 100% return  / 19.2% annual
P/E =  6       4.7 years for 100% return /  21.2% annual
P/E =  5       4 years for 100% return  /   25% annual