Trade: Demand, Supply and Barter
At a weekly market a farmer brings vegetables and town people buy them. One has the goods and the other needs them; when the needs match, trade happens.
Buying and selling of goods and services is trade. Consumers’ wish and ability to buy is demand; goods available with sellers to sell is supply.
Key idea 1 : Demand and supply — If demand rises and supply is low, price goes up. If supply is high and demand low, price falls. Demand and supply affect each other.
Key idea 2 : Barter — Before money, goods were given for goods; this is barter. But both needing each other’s goods at the same time and fixing value was hard. So money became the medium of exchange.
Key idea 3 : Visible and invisible trade — Trade in things you can see like grain, cloth and machines is visible trade. Trade in services such as banking, transport, tourism, insurance and education that cannot be seen is invisible trade.
- Easy : Demand for flowers rises at a festival, supply same. Price? — Rises.
- Medium : A farmer gives wheat and takes oil; what is this? — Barter.
- Exam-type : Hotel service for foreign tourists? — Invisible trade.
In the figure: When demand rises price rises.
Demand ↑ supply same = price ↑.
Invisible trade does not mean hidden or illegal trade; it is trade in services.
Memory clue: Visible = goods; invisible = services. Memory clue: "What you see is goods, what you cannot see is service".
Spot the difference
| Point | Visible trade | Invisible trade |
|---|---|---|
| Nature | Goods | Services |
| Example | Grain, cloth | Banking, tourism |
Practice questions
- 1What is trade?
- 2What are demand and supply?
- 3State the relation between demand and price.
- 4What is barter?
- 5What were the difficulties of barter?
- 6State the difference between visible and invisible trade.
- 7Give three examples of invisible trade.
- 8Write which goods have high demand in your village’s weekly market.
Show answers (try them yourself first)
- 1Buying and selling of goods and services.
- 2Demand = consumers’ wish and ability to buy; supply = goods available for sale.
- 3Price rises with demand and falls when demand falls.
- 4Giving goods and taking goods.
- 5Matching needs at the same time and fixing value was hard.
- 6Visible = trade of goods; invisible = trade of services.
- 7Banking, insurance, tourism.
- 8The student picks from local vegetables, grain or clothes.
Types of Trade and Balance of Trade
If you buy ₹500 of books a month and earn ₹300 by selling old ones, spending is more and earning is less. Countries also keep such accounts of buying and selling.
Trade is divided into wholesale and retail and into domestic and international. The difference between the value of a country’s exports and imports is the balance of trade.
Key idea 1 : Wholesale/retail; domestic/international — Wholesale trade deals in large quantities and retail trade sells small quantities directly to consumers. Trade within the country’s borders is domestic and trade across borders is international.
Key idea 2 : Bilateral and multilateral — Trade between two countries is bilateral. Trade among many countries is multilateral. Selling abroad is export and buying from abroad is import.
Key idea 3 : Balance of trade — If exports exceed imports the balance is favourable; if imports exceed it is unfavourable; if equal it is balanced. Favourable means more money comes to the country.
- Easy : Exports ₹900 crore, imports ₹750 crore. Balance? — Favourable (+150).
- Medium : Exports ₹500 crore, imports ₹620 crore. Balance? — Unfavourable (−120).
- Exam-type : India–Japan trade? — Bilateral.
In the figure: Four types of trade.
Export > import = favourable.
High imports are not always bad, but a constantly unfavourable balance strains a country’s money.
Memory clue: Ex > Im = favourable; Im > Ex = unfavourable. Memory clue: "When export wins the balance is favourable".
Spot the difference
| Situation | Balance | Meaning |
|---|---|---|
| Export > import | Favourable | More money comes in |
| Import > export | Unfavourable | More money goes out |
| Both equal | Balanced | No difference |
Practice questions
- 1State the difference between wholesale and retail trade.
- 2What are domestic and international trade?
- 3Explain bilateral and multilateral trade.
- 4What are export and import?
- 5What is balance of trade?
- 6If exports are ₹650 crore and imports ₹800 crore, which balance?
- 7Why is a favourable balance of trade considered good for a country?
- 8Give an ‘import-export’ example from your house.
Show answers (try them yourself first)
- 1Wholesale = large quantity; retail = small to consumers.
- 2Inside country = domestic; across borders = international.
- 3Two countries = bilateral; many = multilateral.
- 4Export = sale abroad; import = purchase from abroad.
- 5Difference between value of exports and imports.
- 6Unfavourable (−150 crore).
- 7Because more money comes to the country.
- 8E.g. bringing vegetables from outside and selling garden flowers.
International Trade Organisations
Neighbouring societies together decide where stalls go and at what rate goods are sold. In the same way countries form organisations to decide trade rules.
To make trade between countries smooth and to increase cooperation, countries form international and regional organisations.
Key idea 1 : Global organisation — The World Trade Organization (WTO) sets rules for world trade. Its headquarters is at Geneva. It began on 1 January 1995.
Key idea 2 : Regional organisations — European Union (EU – Brussels), SAARC (Kathmandu), ASEAN (Jakarta), APEC (Singapore) and BRICS are regional organisations. As per the textbook BRICS is linked with Shanghai.
Key idea 3 : Oil producers’ organisation — OPEC is an organisation of oil-producing countries with headquarters at Vienna. It discusses oil production and price policies. Membership numbers change with time.
- Easy : Organisation setting rules of world trade? — WTO.
- Medium : Oil producers’ organisation? — OPEC.
- Exam-type : Regional organisation of South Asian countries? — SAARC.
In the figure: Organisations and their headquarters.
The WTO began on 1 January 1995 (Marrakesh Agreement 1994). Timor-Leste became ASEAN’s 11th member on 26 October 2025. Membership changes, so check latest numbers. (Check with the book)
WTO-Geneva, OPEC-Vienna, SAARC-Kathmandu.
Member counts are not fixed; new countries join so the textbook figures may be old.
Memory clue: Geneva-world, Brussels-Europe, Vienna-oil. Memory clue: "World at Geneva, oil at Vienna".
Spot the difference
| Organisation | Headquarters | Work |
|---|---|---|
| WTO | Geneva | Rules of world trade |
| OPEC | Vienna | Oil production and price policy |
| SAARC | Kathmandu | South Asian cooperation |
Practice questions
- 1Where is the headquarters of WTO?
- 2What is the work of WTO?
- 3What is OPEC?
- 4Where is the headquarters of SAARC?
- 5Why are regional organisations formed?
- 6Which is the headquarters of the EU?
- 7Why can the textbook member counts be old?
- 8Write two lines on one organisation of your choice.
Show answers (try them yourself first)
- 1Geneva.
- 2Setting rules of world trade.
- 3Organisation of oil-producing countries.
- 4Kathmandu.
- 5To ease trade and increase cooperation.
- 6Brussels.
- 7Because new countries join or leave.
- 8The student writes name, headquarters and work.
Marketing
Farmer Dhondiba takes tomatoes straight from the field to the village market, but big city buyers pay different prices. Deciding where, how and in what form to sell is marketing.
All the processes to take a product to the consumer are marketing. It includes grading, packaging, advertising and selling.
Key idea 1 : Grading and packaging — Goods are sorted by quality; this is grading. Good packaging keeps goods safe and attractive, so a better price is got.
Key idea 2 : Advertising — Advertising takes the product’s information to people and raises demand. But the information in an advertisement must be true.
Key idea 3 : Consumer protection — A consumer has the right to correct information about goods, price and quality. The Consumer Protection Act ensures complaints of consumers are heard.
- Easy : Separating big and small tomatoes? — Grading.
- Medium : Sending fruit packed in boxes? — Packaging.
- Exam-type : Where to complain on a defective item? — Under the Consumer Protection Act.
In the figure: Marketing steps from field to consumer.
Grading-Packaging-Advert-Selling.
Advertising is not just selling; giving true information is also necessary.
Memory clue: Four steps: grading, packaging, advertising, selling. Memory clue: "Grade, Pack, Advertise, Sell".
Spot the difference
| Step | Work | Benefit |
|---|---|---|
| Grading | Sorting by quality | Better price |
| Packaging | Safe packing | Goods last longer |
| Advertising | Giving information | Demand rises |
Practice questions
- 1What is marketing?
- 2What is grading and why is it done?
- 3State the advantages of packaging.
- 4State the advantages and limits of advertising.
- 5Why is the Consumer Protection Act needed?
- 6State one advantage and one difficulty of a farmer selling directly to consumers.
- 7Which are two of your rights as a consumer?
- 8Prepare an advertisement for a product (four lines).
Show answers (try them yourself first)
- 1Process of taking a product to the consumer.
- 2Sorting by quality; so a fair price is got.
- 3Goods safe, attractive and lasting.
- 4Information and demand rise; but information must be true.
- 5To protect consumers from being cheated.
- 6Advantage: more profit; difficulty: transport and time.
- 7Right to information and right to complain.
- 8The student writes an ad with name, features and message.