A man deposited Rs 10000 in a bank at the rate of 5% simple interest annually. Find the amount in `15^(t h)`year since he deposited the amount and also calculate the total amount after 20 years.

Explanation

To solve the problem step by step, we will calculate the amount in the 15th year and then the total amount after 20 years using the simple interest formula.

### Step 1: Understand the Simple Interest Formula
The formula for calculating simple interest (SI) is given by:
\[ SI = \frac{P \times R \times T}{100} \]
where:
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