## How long will it take the investment to double?

All you do is **divide 72 by the fixed rate of return to get the number of years it will take for your initial investment to double**. For example, if your investment earns 6% per year on average, you would take 72 divided by 6 to determine that it will take 12 years for your money to double.

**How do you find how long it takes for an investment to double?**

**The Rule of 72 is a calculation that estimates the number of years it takes to double your money at a specified rate of return**. If, for example, your account earns 4 percent, divide 72 by 4 to get the number of years it will take for your money to double. In this case, 18 years.

**How long will it take for an investment to double at a 3% per year _____ a simple interest rate?**

Answer and Explanation:

a) With a simple interest rate it will take **33.33 years** for an investment to double at 3% per year. Why? Basically because the simple interest is always calculated over the initial principal. Thus, if we have an initial investment of $100, we should add $3 per year to this amount.

**How long will it take for an investment to double at a 6% per year _____?**

So, if the interest rate is 6%, you would divide 72 by 6 to get 12. This means that the investment will take about **12 years** to double with a 6% fixed annual interest rate.

**How long will it take for a $2000 investment to double in value?**

Interest on investment rate: 6% p.a. It would take **12 yearsto** double an investment of $2,000.

**Why is 72 the rule of 72?**

Direct link to Ryan's post “The rule of 72 is more ab...” The rule of 72 is more about getting an easy estimate than being perfectly accurate. 72 is commonly used **because it has so many divisors (1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36), so it's much easier to calculate in your head**.

**How long will it take for an investment to double in value if it earns 7% compounded continuously?**

It takes **9.9 years** for money to double if invested at 7% continuous interest. t=ln(2)/r where r was 0.07 in that solution.

**How long will it take for an investment of $1000 to double in value if the interest rate is 8.5% per year?**

According to this rule of thumb, the number of years to double the value of an investment is 72 divided by the rate of return (in percentage terms). In this question, the rate of return is 8.5 percent, so the number of years to double the value of the investment is: **72 / 8.5 = 8.47**.

**How long will it take for an investment to double at a 4 per year simple interest rate?**

Simple interest means that the sum increases by 4% of the original amount each year. The money doubles when 100% of the original amount is earned. That will take **25 years**.

**How long will it take money to double if it is invested at 5%?**

If the expected annual return on a CD is 5% and you invest the same amount, it will take you **14.4 years** to double your money.

## How long does it take an investment to double at an interest rate of 8%?

For example, if an investment scheme promises an 8% annual compounded rate of return, it will take **approximately nine years** (72 / 8 = 9) to double the invested money.

**How long will it take $1000 to double at 6% simple interest?**

Answer and Explanation:

The answer is: **12 years**.

**How long will it take for an investment to double at 12% compounded monthly?**

A 10% interest rate will double your investment in about 7 years (72 ∕ 10 = 7.2); an amount invested at a 12% interest rate will double in about **6 years** (72 ∕ 12 = 6). Using the Rule of 72, you can easily determine how long it will take to double your money.

**How long will it take $2000 invested at 8% to double?**

Answer and Explanation:

The calculated value of the number of years required for the investment of $2,000 to become double in value is 9 years.

**How many years will it take for $2000 to double at a simple annual interest rate of 8%?**

The rule says that to find the number of years required to double your money at a given interest rate, you just divide the interest rate into 72. For example, if you want to know how long it will take to double your money at eight percent interest, divide 8 into 72 and get 9 years.

**What is the rule of 69?**

The Rule of 69 states that **when a quantity grows at a constant annual rate, it will roughly double in size after approximately 69 divided by the growth rate**. The Rule of 69 is derived from the mathematical constant e, which is the base of the natural logarithm.

**Does the Rule of 72 actually work?**

**The Rule of 72 provides only an estimate, but that estimate is most accurate for rates of return between 5% and 10%**. Looking at the chart in this article, you can see that the calculations become less precise for rates of return lower or higher than that range.

**Did Albert Einstein invent the Rule of 72?**

**No, Albert Einstein did not invent the rule of 72**.

Albert Einstein is known for developing the relativity theory and also contributing to the development of quantum mechanics. The person who invented the rule of 72 was Luca Pacioli, who was a mathematician.

**What is rule 69 and 72?**

Rules of 72, 69.3, and 69

**The Rule of 72 states that by dividing 72 by the annual interest rate, you can estimate the number of years required for an investment to double**. ● The Rule of 69.3 is a more accurate formula for higher interest rates and is calculated by dividing 69.3 by the interest rate. ●

**How many years does it take to double a $100 investment when interest rates are 7 percent per year?**

It will take a bit over 10 years to double your money at 7% APR. So 72 / 7 = **10.29 years** to double the investment.

## How to earn 10 interest per month?

**Investments That Can Potentially Return 10% or More**

- Stocks.
- Real Estate.
- Private Credit.
- Junk Bonds.
- Index Funds.
- Buying a Business.
- High-End Art or Other Collectables.

**What is the rule of 72 the amount of time to double your money?**

Do you know the Rule of 72? It's an easy way to calculate just how long it's going to take for your money to double. Just **take the number 72 and divide it by the interest rate you hope to earn**. That number gives you the approximate number of years it will take for your investment to double.

**How long it will take for an investment of $1000 dollars to double in value if the interest rate is 9 percent per year compounded continuously?**

It will take approximately **7.70 years** for the investment to double.

**How long will it take for a $1000 investment to double in size when invested at the rate of 8% per year?**

Hence, it will take 8.8 years to double the investment.

**How long will it take an investment of $9000 to double if the investment earns interest at the rate of 8% compounded continuously?**

Answer and Explanation:

Thus, the investment will roughly take **9 years** to double.