Selling Price of suitcase = ₹1440
Profit % = 20%
Marked price = 100120 × 1440 = ₹1200
Hence, the marked price of the suitcase is ₹1200
Purchase cost of the suitcase = ₹1200 - 15% of ₹1200
= ₹1200 - 15 × 1200100
= ₹1200 - 180
= ₹ 1020
Kunal bought the suitcase for ₹1020.