A shopkeeper marks his articles at such a price that after allowing a discount of 25% on the marked price, he still
earns a profit of 10%. The marked price of an article which costs him Rs.8400 is :

​Cost Price (CP) = Rs. 8400

Profit Percentage = 10%

Discount Percentage = 25%

​Selling Price (SP) = $$CP \times \left(1 + \frac{\text{Profit Percentage}}{100}\right)$$​​

Marked Price (MP) = $$\frac{SP}{1 - \frac{\text{Discount Percentage}}{100}}$$​​