Let cost be C
Then selling price after markup, or before discount is 1.2C
Selling price after discount: 1.2C * .95 = 1.14C
With FINAL selling price given as ₹228, we can say that: 1.14C = 228
C, or cost of goods =
As cost is ₹200 and FINAL selling price is ₹228, gain on sale of goods =(₹28).