Selling Price = 80% of Cost Price. 0.8 * CP = 2400. CP = 2400 / 0.8 = ₹3,000.
विक्रय मूल्य = क्रय मूल्य का 80%। 0.8 * CP = 2400। CP = 2400 / 0.8 = ₹3,000।