Cost Price (CP) of one fan = Total Cost Price ∕ Number of Fans = Rs. 24,000 / 12 = Rs. 2,000 per fan. Marked Price (MP) of one fan =CP+25% of CP = Rs. 2,000+0.25× Rs. 2,000 = Rs. 2,500 per fan. Discounted Price (Selling Price) of one fan = MP −10% of MP = Rs. 2,500−0.10× Rs. 2,500 = Rs. 2,250 per fan. Total Selling Price for 12 fans = Selling Price per fan × Number of Fans = Rs. 2,250×12 = Rs. 27,000 . Total Profit = Total Selling Price - Total Cost Price = Rs. 27,000 - Rs. 24,000 = Rs. 3,000 .