A trader marks up a product by 20%. If he sells it at a discount of 12%, his net gain percentage is,
Let the CP of the product be ₹ 100
Thus the marked price, MP = ₹ 120
Discount on MP =12%
∴ Discount =12100 × 120=₹ 14.4
∴ SP = MP − discount
=120 - 14.4
=105.6
Hence his net gain percent is 5.6%.