A sum of Rs 1000 is invested at 8% simple interest per year. Calculate the interest at the end of each year. Do these interests form an AP? If so, find the interest at the end of 30 years making use of this fact.

Explanation

To solve the problem step by step, we will calculate the simple interest for each year, check if the interests form an arithmetic progression (AP), and then find the interest at the end of 30 years using the properties of AP.

### Step 1: Calculate the Simple Interest for Each Year
The formula for calculating simple interest (SI) is given by:

\[ \text{SI} = \frac{P \times r \times T}{100} \]
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