Answer: Purchase price = ₹ 48,640; CGST = ₹ 5320 and SGST = ₹ 5320
Discount \( = 5\% \text{ of } 40000 = ₹\,2000 \), so taxable value \( = 40000 - 2000 = ₹\,38{,}000 \).
\[ \text{GST} = 38000 \times \frac{28}{100} = ₹\,10{,}640 \]
CGST = SGST \( = 10640 \div 2 = ₹\,5320 \) (14% each).
Purchase price \( = 38000 + 10640 = ₹\,48{,}640 \).