What is the simple interest (in Rs) on a principal of Rs 1800 at the rate of 8% per annum for 3 years?

Options

A. 420
B. 432
C. 440
D. 380

Answer

To find the simple interest on a principal amount, we can use the formula:

\[ \text{Simple Interest (SI)} = \frac{P \times R \times T}{100} \]

Where:
- \( P \) = Principal amount
- \( R \) = Rate of interest per annum
- \( T \) = Time in years

### Step-by-Step Solution:

1. **Identify the values**:
- Principal \( P = 1800 \) Rs
- Rate \( R = 8\% \)
- Time \( T = 3 \) years

2. **Substitute the values into the formula**:
\[ SI = \frac{1800 \times 8 \times 3}{100} \]

3. **Calculate the multiplication in the numerator**:
- First, calculate \( 8 \times 3 = 24 \)
- Then, calculate \( 1800 \times 24 = 43200 \)

4. **Divide by 100**:
\[ SI = \frac{43200}{100} = 432 \]

5. **Conclusion**:
The simple interest is \( \text{Rs. } 432 \).

### Final Answer:
The simple interest on a principal of Rs. 1800 at the rate of 8% per annum for 3 years is Rs. 432.

---