Discount and Commission
Class-8-Mathematics-Chapter-9-Maharashtra Board
Notes
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Topics to be learn :
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Recall :
A percent (or per cent) is a way of expressing a number as a fraction of 100.
The term "per cent" is represented by the symbol %.
For example, 12 per cent is written as 12% and is mathematically equivalent to the fraction \(\frac{12}{100}\).
Any percentage can be written as a fraction with a denominator of 100, such as 47% = \(\frac{47}{100}\) or 86% = \(\frac{86}{100}\).
To find a specific percentage of a total, multiply the total by the percentage fraction.
Examples:
(i) To find 4% of 300, calculate 300 × \(\frac{4}{100}\), which equals 12.
(ii) To find 15% of 1700, calculate 1700 × \(\frac{15}{100}\), which equals 255.
In business transactions, percentages are the standard way to express
- discounts (given on the marked price),
- commissions (paid to agents based on the selling price), and
- rebates (incentives often backed by the government).
Discount :
A discount is a reduction in the price of an item, which is typically offered by a shopkeeper to attract customers.
To calculate values related to discounts, the following mathematical relationships are used:
Discount = Marked Price – Selling Price.
Selling Price = Marked Price – Discount.
Percentage of Discount: If the discount percentage is x, it can be expressed as: \(\frac{x}{100}\) = \(\frac{Discount}{Marked\,Price}\).
∴ Discount = Marked Price × \(\frac{x}{100}\)
- Marked Price (M.P.): This is the price printed on the item's tag or label. It is also referred to as the printed price.
- Selling Price (S.P.): This is the actual price a customer pays after the discount has been subtracted from the marked price.
Calculating a Discount :
Discounts are almost always expressed as a percentage of the marked price.
Example:
If a book has a marked price of ₹ 75 and is sold at a 12% discount, the discount amount is calculated as:
∴ Discount = 75 × \(\frac{12}{100}\) = ₹ 9.
∴ Selling Price = Marked Price – Discount = ₹ 75 - ₹ 9 = ₹ 66.
The Monsoon Saree Sale (Strategy of Discount) :
Using data from Mr. Suresh’s Saree Shop, we can see that a discount isn't just a gift to the customer—it’s a calculated business move.
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Month |
Profit per Saree | Number of Sarees Sold | Total Monthly Profit |
| June (No Discount) | Rs. 50 | 40 | Rs. 2,000 |
| July (Monsoon Discount) | Rs. 30 | 100 | Rs. 3,000 |
Strategy:
Mr. Suresh made Rs. 20 less per saree in July, but his bank account grew by Rs. 1,000 more than in June. Why?
- Selling a high number of items at a lower profit (Volume) often results in more money than selling a few items at a high profit (Margin).
- Items sitting on a shelf are "frozen" money. By clearing out stock during a Monsoon Sale, Mr. Suresh frees up space for new winter styles.
- A business needs cash moving through it constantly to pay bills and buy new stock. Selling 100 sarees quickly provides the "Cash Flow" needed to keep the business healthy.
Solved Examples :
(1) The marked price of a book is Rs. 360. The shop keeper sold it for Rs. 306. How much percent discount did the shopkeeper give ?
Solution:
Marked Price = ₹ 360, Selling Price = ₹ 306.
∴ Discount = 360 - 306 = ₹ 54.
On marked price of Rs. 360, the discount is 54 rupees.
∴ if the marked price is ₹ 100, let the discount be x.
\(\frac{Discount}{Marked\,Price}\) = \(\frac{x}{100}\)
∴ \(\frac{54}{360}\) = \(\frac{x}{100}\)
∴ x = \(\frac{54}{360}\ × 100 = 15
∴ 15% discount is given on the book.
(2) After giving a discount of 20%, a saree is sold for Rs. 1120. Find the marked price of the saree.
Solution :
Let us assume that the actual marked price of the saree, which was sold for Rs. 1120, was x.
Discount = Marked Price × Discount Percent = x × \(\frac{20}{100}\) = 0.2x
Selling Price = Marked Price – Discount
∴ 1120 = x – 0.2x
1120 = 0.8x
∴ x = \(\frac{1120}{0.8}\) = 1400
∴ Marked Price (x) = Rs. 1400
Commission :
When a company or individual cannot sell goods or property directly, they employ a commission agent. The remuneration paid to this individual for their service is known as Commission.
- The Difference (Discount & Commission) : A discount is a price cut for the buyer. A commission is a fee paid to a third party for their expertise and help.
The Role of the Agent :
- Mediators: Agents often act as mediators between buyers and sellers for high-value assets such as land, houses, and cattle.
- Market Facilitators: In agricultural markets, agents facilitate the sale of foodgrains, vegetables, fruits, and flowers.
- Payment Structure: Commission is calculated as a percentage of the transaction value. Depending on the agreement, it may be received from the seller, the buyer, or both.
Brokerage in Real Estate : In property transactions, the commission is often referred to as brokerage.
Note : Commission is a percentage of the total transaction value. It is either subtracted from the seller's final check or added as an extra cost for the buyer.
Examples :
(1) The Shripati Land Sale (Brokerage) :
Shripati sold land for Rs. 2,50,000 through a Broker. Because the broker provided a service to both the seller (finding a buyer) and the buyer (finding the land), he charged a 2% fee to both sides.
Brokerage from one side = 2,50,000 × \(\frac{2}{100}\) = Rs. 5,000
Total Remuneration = Rs. 5,000 (from Seller) + Rs. 5,000 (from Buyer) = Rs. 10,000 total.
(2) The Sukhdeo Wheat Sale (Agent) :
Sukhdeo sold 10 quintals of wheat at Rs. 4,050 per quintal through an Agent at a 1% commission rate.
Total Sale Value = 10 × 4,050 = Rs. 40,500
Commission Deduction: 40,500 × \(\frac{1}{100}\) = Rs. 405
Sukhdeo receives 40,500 - 405 = Rs. 40,095.
Rebate :
A rebate is a specific type of discount granted under certain conditions by the government or recognized institutions (e.g., Khadi Gramodyog Bhandar, Handloom shops, Handicraft Emporiums).
Characteristics of Rebates :
- Compensation: Unlike a standard retail discount where the shopkeeper bears the cost, the amount of a rebate is compensated by the government.
- Forms of Rebate: It can be a lump sum or a percentage of the printed price.
- Income Tax Rebate: Individuals with income below a certain limit receive a discount on their payable income tax, which is also formally termed a rebate.
Which Principle Applies?
| Principle | Typical Context | Who Benefits | Who Pays/Compensates |
| Discount | Retail Sales (e.g., Monsoon Sale) | The Buyer | The Shopkeeper (accepts lower profit) |
| Commission | Property or Agricultural Sales | The Agent/Broker | The Seller and/or the Buyer |
| Rebate | Khadi/Handloom Sales | The Buyer | The Government (repays the shop) |
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