A partnership turned a profit of R40000. This amount of profit is invested in an account and earns 7,5% simple interest per annum. How much interest would this specific amount of invested profit earn over a 4 year period 

To calculate the interest earned over a 4-year period with simple interest, we use the formula:

\[
I = P \times \frac{r \times t}{100}
\]

Where:
- \(I\) is the interest earned.
- \(P\) is the principal amount (initial investment), which is R40,000.
- \(r\) is the annual interest rate, which is 7.5%.
- \(t\) is the time in years, which is 4 years.

Now, let's plug in the values and calculate the interest.The interest earned on the invested profit over a 4-year period would be **R12,000**.

Do you want more details or have any further questions?

Here are some related questions to consider:
1. What would be the total amount in the account after 4 years, including interest?
2. How much interest would be earned if the rate was 6% instead of 7.5%?
3. What if the interest was compounded annually instead of being simple interest?
4. How much interest would be earned in 5 years at the same rate?
5. How does the interest change if the time period is shortened to 2 years?

**Tip:** When calculating simple interest, the interest is directly proportional to both the principal and the time period.

Learn how to calculate simple interest on an investment of R40,000 at an annual rate of 7.5% over a 4-year period. Understand the formula and steps involved in computing the interest earned. Suitable for high school students and anyone interested in financial calculations.

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