In business and marketing we come across words like profit, loss and discount. Cost price, selling price and marked price of an article. The definitions of these terms are given here.

**Marked price (M.P.)**
- Marked price is marked on the article. It is the price at which the shopkeeper decides to sell the article.

**Cost price (C.P.)**
- Cost price is the cost of the article for the shopkeeper. It is the amount which the shopkeeper paid to buy the article from wholesaler. Wholesaler is a person who buy goods in bulk i.e. large quantities. For example shopkeeper buys toothbrush in 50 quantity but wholesaler will buy from factories in 2000 quantity and distribute to shopkeepers.

**Selling price (S.P.)**
- Selling price is the amount which the customer has to pay to the shopkeeper.

**Discount (D)**
- the difference of Marked price and selling price is Discount.

**Discount = Marked Price - Selling Price**

**Profit**
- If the selling price is greater than cost price then the shopkeeper makes a profit and the profit is the difference of Cost price and selling price.

**Profit = Cost Price - Selling Price**

**Loss**
- If the cost price is less than selling price then the shopkeeper makes a loss and the loss is the difference of Selling price and Cost price.

**Loss = Selling Price - Cost Price**

**Profit %**
- It is the percentage of profit and Cost price.

**Profit % = (Profit/C.P.)×100 = [(C.P. - S.P.)×100]/(C.P)**

**Loss %**
- It is the percentage of Loss on Cost price.

**Profit % = (Loss/C.P.)×100 = [(S.P. - C.P.)×100]/(C.P)** **
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**Discount %**
- It is the percentage of Discount on Marked price.

**Discount % = (Discount/M.P.)×100 = [(M.P. - S.P.)×100]/(M.P)**