https://file.aiquickdraw.com/mathbot/file/1726380462611wacs0tsh.jpg

From the image provided, we can extract the following information from part (b):

- **Simple Interest (S.I.)** = ₹2115
- **Principal (P)** = ₹28,200
- **Rate (R)** = 9%

The formula for Simple Interest is:

\[
S.I. = \frac{P \times R \times T}{100}
\]

Where:
- \( S.I. \) is the simple interest,
- \( P \) is the principal amount,
- \( R \) is the rate of interest per year, and
- \( T \) is the time in years.

To find the time \( T \), we can rearrange the formula as follows:

\[
T = \frac{S.I. \times 100}{P \times R}
\]

Let me calculate the time \( T \).The time \( T \) for which the money was invested is approximately 0.83 years, or about 10 months.

Would you like further details or have any questions?

Here are some related questions:
1. How is compound interest different from simple interest?
2. What would the interest be for a different rate, say 8%?
3. How can you calculate the total amount paid after interest is added?
4. What happens if the principal is increased to ₹50,000 but the rate remains the same?
5. How can you convert time in months to years when solving interest problems?

**Tip:** Simple Interest calculations are linear, meaning the interest is directly proportional to both time and the principal amount.

Given that the simple interest is ₹2115, the principal is ₹28,200, and the rate is 9%, find the time for which the interest was calculated.

Learn how to calculate the time for which ₹28,200 was invested at a 9% interest rate, resulting in a simple interest of ₹2115. This problem uses the basic simple interest formula and is suitable for students in Grades 7-9.

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