Calculate the amount and compound interest on (a) Rs for 3 years at `(12) 1/2%` per annum compounded annually. (You could use the year by year calculation using SI formula to verify). (z) `Rs 10,000` for 1 year at `8%` per annum compounded half yearly.

Explanation

To solve the given problems step by step, we will break down each part of the question systematically.

### Part (a): Calculate the amount and compound interest on Rs 10,800 for 3 years at 12.5% per annum compounded annually.

1. **Identify the given values**:
- Principal (P) = Rs 10,800
- Rate (R) = 12.5% per annum = \( \frac{25}{2} \% \)
- Time (T) = 3 years
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