a shopkeeper marks an article at x and offers a discount of 20%on it he sells it for 432 after charging vat of 12.5% on discounted price.what is the value of x

x = 480. Assume x = 1000 at first. After giving discount of 20% on MP, SP becomes 800 (1000 - 20%). After adding 12.5% VAT, new SP becomes 900 (800 + 12.5%). Using unitary method, we can find x. x = (1000*900)/432 = 480.