12% discount is given on the marked price. Therefore, if marked price is ₹ 100, then selling price is ₹ 88.
Let the selling price be ₹ x when the marked price is ₹ 3,000.
= ₹ 2,640
So, the selling price of the fan is ₹ 2,640.
∴ Discount = Marked price − Selling price = ₹ 3,000 − ₹ 2,640 = ₹ 360
Thus, the discount on fan is ₹ 360.