Rule of 72
The time required for a given Principal to double (assuming 
Conversion Period) for CompoundInterest is given by solving
 | (1) |
 | (2) |
 | (3) |
(left plot) and difference between actual and time calculated using the rule of72 (right plot) as a function of the interest rate 
.See also Compound Interest, Interest
References
Avanzini, J. F. Rapid Debt-Reduction Strategies. Fort Worth, TX: HIS Pub., 1990.
- Rank (Statistics)
- Rank (Tensor)
- Ranunculoid
- RAT-Free Set
- Ratio
- Ratio Distribution
- Rational Approximation
- Rational Canonical Form
- Rational Cuboid
- Rational Distances
- Rational Domain
- Rational Double Point
- Rational Function
- Rational Integer
- Rational Number
- Rational Point
- Rational Quadrilateral
- Rational Triangle
- Ratio Test
- RATS Sequence
- Ray
- Rayleigh Differential Equation
- Rayleigh Distribution
- Rayleigh-Ritz Variational Technique
- Rayleigh's Formulas