Rule of 72
Také známý jako: Doubling Time Rule
t \approx \frac{72}{r}
t ≈ 72 / rCo to počítá
A quick mental math shortcut to estimate how many years it takes for an investment to double at a given annual rate of return.
proměnné
| Symbol | Jméno | Popis |
|---|---|---|
| t | Doubling Time | Approximate years for an investment to double |
| r | Annual Rate | Annual interest rate as a percentage (not decimal) |
Zpracované příklady
1
t = 72 / 8 = 9 yearsVýsledek: ~9 years
Zkuste kalkulačku
Související vzorce
#mental math#investing#doubling