Skip to main content
SingaporeBusiness StudiesSyllabus dot point

Why do businesses exist, and how do they add value as they turn inputs into goods and services people want?

Explain the purpose of business activity, the meaning of needs and wants, scarcity and opportunity cost, the factors of production, and how a business adds value

A focused answer to the O-Level Business Studies outcome on why businesses exist. Needs and wants, scarcity and opportunity cost, the four factors of production, and how a business adds value by turning inputs into outputs that customers will pay for.

Generated by Claude Opus 4.88 min answer

Reviewed by: AI editorial process; not yet individually human-reviewed

Have a quick question? Jump to the Q&A page

Jump to a section
  1. What this dot point is asking
  2. The answer
  3. Examples in context
  4. Try this

What this dot point is asking

This outcome wants you to explain why businesses exist in the first place. The key ideas are that people have unlimited needs and wants but resources are scarce, so every choice has an opportunity cost; that businesses combine the four factors of production to make goods and services; and that the central job of a business is to add value by turning inputs worth less into outputs worth more.

The answer

Needs, wants and the purpose of business

A need is something essential for survival, such as food, water, shelter and clothing. A want is something people would like but can live without, such as a holiday or the latest phone. Wants are effectively unlimited.

Businesses exist to satisfy these needs and wants by producing goods (physical products such as bread or shoes) and services (intangible activities such as a haircut or bus journey). In doing so, a business aims to make a profit, create jobs and provide products customers value.

Scarcity and opportunity cost

Because resources are limited but wants are unlimited, there is scarcity. Scarcity forces everyone, including businesses, to make choices about how to use what they have.

Whenever a choice is made, something else is given up. The opportunity cost is the next best alternative sacrificed. If a firm spends money on a delivery van, the opportunity cost might be the new computers it could have bought instead. Recognising opportunity cost helps a business choose the option with the greatest benefit.

The factors of production

To produce anything, a business combines four factors of production:

  • Land - natural resources, such as the site, raw materials, water and minerals.
  • Labour - the physical and mental effort of workers.
  • Capital - the man-made resources used to produce goods, such as machinery, tools and buildings.
  • Enterprise - the entrepreneur who brings the other three together, takes the risk and organises production.

Adding value

The central purpose of business activity is to add value. Adding value means the selling price of a product is higher than the cost of the bought-in materials and inputs used to make it.

Value added=Selling price−Cost of bought-in materials\text{Value added} = \text{Selling price} - \text{Cost of bought-in materials}

A business can increase value added by raising the price customers will pay (for example through branding, better design or excellent service) or by lowering the cost of inputs (for example buying materials more cheaply). The value added pays for wages, rent and other costs, and what remains is profit.

Examples in context

Example 1. A coffee shop adds value to beans. Raw coffee beans cost a coffee shop very little per cup. By roasting, grinding, brewing and serving the coffee in a pleasant cafe with friendly staff, the shop sells a cup for several dollars. The large gap between the cost of the beans and the price of the cup is the value added through the shop's skill, service and atmosphere, showing how a simple input becomes a product customers will pay much more for.

Example 2. Scarcity and choice in a start-up. A new business with a $20,000 budget cannot do everything at once. If it spends the money on equipment, it cannot also spend it on advertising. The owner must weigh the benefit of each option and accept that choosing one means giving up the other. This everyday decision shows scarcity forcing a choice, and the rejected option is the opportunity cost.

Try this

Q1. State the difference between a need and a want, giving one example of each. [2 marks]

  • Cue. A need is essential for survival (for example, food or shelter); a want is something desired but not essential for survival (for example, a holiday or a games console).

Q2. A bakery buys ingredients for 3andsellsacakefor3 and sells a cake for 11. Calculate the value added per cake and state one way it could be increased. [3 marks]

  • Cue. Value added = 11−11 - 3 = 8.Itcouldbeincreasedbybrandingthecakesandraisingtheprice,orbybuyingingredientsmorecheaplytolowerthe8. It could be increased by branding the cakes and raising the price, or by buying ingredients more cheaply to lower the 3 cost.

Q3. Explain why a business faces opportunity cost when it decides how to spend its limited budget. [4 marks]

  • Cue. The budget is a scarce resource and unlimited wants compete for it, so the business must choose between options (for example, new machinery or a marketing campaign). Choosing one means the benefit of the next best option is given up, and that sacrificed benefit is the opportunity cost, which exists for every spending decision.

Exam-style practice questions

Practice questions written in the style of SEAB exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.

Original4 marksA bakery buys flour, sugar and eggs for 2perloafandsellseachloaffor2 per loaf and sells each loaf for 5. (a) Explain what is meant by adding value. (b) Calculate the value added per loaf and explain one way the bakery could increase it.
Show worked answer →

(a) Adding value means increasing the worth of inputs as they are turned into a finished product, so the selling price is higher than the cost of the bought-in materials. The difference is the value the business has added through its work.

(b) Value added per loaf = selling price - cost of materials = 5−5 - 2 = $3.

One way to increase value added is to brand the loaves as artisan or organic and charge a higher price, so the gap between selling price and material cost widens. Alternatively, the bakery could buy ingredients more cheaply in bulk to cut the $2 cost.

Markers reward a clear definition of adding value, the correct calculation ($3), and a sensible method that either raises the price or lowers the input cost.

Original6 marksA student says: "There is no opportunity cost when a business uses its own money, because it does not have to borrow." Explain why this statement is wrong, using the ideas of scarcity and opportunity cost.
Show worked answer →

Define the ideas. Scarcity means there are limited resources (money, time, materials, workers) but unlimited wants, so choices must be made. Opportunity cost is the next best alternative given up when a choice is made.

Apply to the case. Even when a business uses its own money rather than borrowing, that money is still a scarce resource. If it spends 50,000onnewmachinery,itcannotalsospendthesame50,000 on new machinery, it cannot also spend the same 50,000 on, say, a marketing campaign or extra stock. The benefit of the marketing campaign that is given up is the opportunity cost.

Conclude. So the statement is wrong: opportunity cost is not about whether you borrow, but about the alternatives sacrificed whenever a scarce resource is used. Every business decision has an opportunity cost because resources used for one purpose cannot be used for another.

Markers reward defining scarcity and opportunity cost, applying them to own funds being a scarce resource, and the clear conclusion that opportunity cost exists regardless of borrowing.

Related dot points