Answer:
We'll need the attached equation.
We'll use as an example that principal = 100 and total =200.
Years = ln (total/principal) / rate
where "ln" means natural log
Years = ln (200/100) / .06
Years = ln (2) / .06
Years = 0.69314718056 / .06
Years = 11.5524530093
Source: http://www.1728.org/rate2.htm
Step-by-step explanation:
