# Why 0.35 is added in rule of 69? By Nick

### Quick Peek:

Investors can use the rule of 69 to calculate the time it takes for their investment to double, but adding 0.35 to the result will provide a more accurate outcome. This is because the rule of 69 assumes that interest is compounded annually, while in reality, it is usually compounded quarterly or monthly. The adjustment accounts for the compounding effect of interest and can make a significant difference in the final payout. For instance, if a person invests in a bank FD with a rate of return of 5%, their investment will double in approximately 14.15 years.

## To get a more precise outcome, we should add 0.35 to the result.

Have you ever wondered why 0.35 is added in the rule of 69? Well, the answer is simple. To get a more precise outcome, we should add 0.35 to the result. This may seem like a small addition, but it can make a big difference in the long run.

Let’s take an example to understand this better. Suppose a person wants to invest in a bank FD (fixed deposit), which gives a rate of return of 5%. According to the rule of 69, the amount will double in ((69 / 5) or 13.8 years. However, this calculation is not entirely accurate. To get a more precise outcome, we should add 0.35 to the result. In this case, the amount will double in ((69 / 5) + 0.35 or 14.15 years.

The reason why we need to add 0.35 to the result is that the rule of 69 assumes that the interest is compounded annually. However, in reality, interest is usually compounded quarterly or monthly. This means that the actual time taken for the amount to double will be slightly longer than what the rule of 69 predicts.

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By adding 0.35 to the result, we are accounting for the compounding effect of interest. This adjustment may seem small, but it can make a big difference over time. For instance, if you are planning to invest a large sum of money, a small difference in the time taken for the amount to double can result in a significant difference in the final payout.

In conclusion, the rule of 69 is a useful tool for calculating the time taken for an investment to double. However, to get a more accurate result, we should add 0.35 to the calculation. This adjustment accounts for the compounding effect of interest and can make a big difference in the final payout. So, the next time you use the rule of 69, don’t forget to add 0.35 to the result for a more precise outcome.