What is the simple interest of Rs 800 at the rate of 18% per annum for 6 months?

Options

A. 70
B. 72
C. 76
D. 78

Answer

To find the simple interest for Rs 800 at the rate of 18% per annum for 6 months, we can use the formula for simple interest:

**Simple Interest (SI) = (P × R × T) / 100**

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

### Step 1: Identify the values
- Principal (P) = Rs 800
- Rate (R) = 18% per annum
- Time (T) = 6 months = 6/12 years = 0.5 years

### Step 2: Substitute the values into the formula
Now, we can substitute the values into the formula:

SI = (800 × 18 × 0.5) / 100

### Step 3: Calculate the numerator
First, calculate the product of the principal, rate, and time:

800 × 18 = 14400

Now, multiply this by 0.5:

14400 × 0.5 = 7200

### Step 4: Divide by 100
Now, divide the result by 100 to find the simple interest:

SI = 7200 / 100 = 72

### Final Answer
The simple interest for Rs 800 at the rate of 18% per annum for 6 months is **Rs 72**.

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