Pearson Edexcel IGCSE Economics: Business Economics — Practice Questions (4EC1)

These are original questions written for Marlbridge, in the style and at the standard of the examination. They are not reproduced past-paper questions — examination boards hold copyright in their own papers. Use these alongside the official past papers available free from your board.

Related: Business economics study guide

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Section A

1. Identify the four factors of production and give a reward associated with each. [4]

2. Define productivity and state one factor that could improve labour productivity. [3]

Section B

3. Explain two advantages and one disadvantage of division of labour for a business. [6]

4. A firm produces 2,000 units, selling each for $40. Its total fixed costs are $15,000 and its total variable costs are $45,000. Calculate the firm’s total revenue, total costs, profit and average total cost. [6]

5. Distinguish internal economies of scale from external economies of scale, giving one example of each. [6]

6. With reference to a long-run average cost (LRAC) curve, explain what happens to a firm’s average costs as it grows too large. [5]

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Answers

1. Land — rent [1]; Labour — wages [1]; Capital — interest [1]; Enterprise — profit [1].

2. Productivity is output produced per unit of input (e.g. per worker) in a given time period [1] [1]. Labour productivity could be improved through training or education [1] (or migration of skilled workers, or improved working conditions).

3. Advantages: workers become highly skilled and efficient at their specific task, increasing output [1] [1]; less time is lost switching between tasks, since each worker focuses on one job [1] [1]. Disadvantage: workers can become bored performing the same repetitive task, which may reduce motivation and increase errors or absenteeism [1] [1].

4.

Total revenue     = 2,000 x $40 = $80,000
Total costs        = $15,000 + $45,000 = $60,000
Profit             = $80,000 - $60,000 = $20,000
Average total cost = $60,000 / 2,000 = $30 per unit

[1] mark for each of total revenue, total costs, profit, and average total cost calculated correctly, [1] [1] for correct method shown.

5. Internal economies of scale arise from a single firm’s own growth — for example, bulk-buying raw materials at a discount as order size increases [1] [1] [1]. External economies of scale arise from the whole industry growing in one area — for example, a local pool of skilled labour developing because many similar firms are based nearby, benefiting every firm in the area [1] [1] [1].

6. As a firm grows, average costs initially fall as it captures economies of scale (e.g. bulk buying, specialisation) [1] [1]. Average costs reach a minimum at the most efficient scale of production [1]. If the firm continues to grow beyond this point, diseconomies of scale set in — for example, communication problems or difficulty coordinating a very large workforce — causing average costs to rise again [1] [1].

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Exam technique for this topic

Calculation questions like Q4 are marked on method as well as final answer, so always show each step (total revenue, then total costs, then profit, then average cost) as a separate labelled line rather than jumping straight to a final number — a correct method with a minor arithmetic slip usually earns more marks than an unexplained final answer, right or wrong. When asked to distinguish internal from external economies of scale (as in Q5), always attach a concrete example to each side of the distinction, since a definition alone without an example rarely earns full marks on this specification. For LRAC-curve questions, describe the curve’s shape in three stages — falling (economies), minimum (efficient scale), rising (diseconomies) — rather than jumping straight to “costs rise if a firm gets too big” without explaining the economies-of-scale stage that comes first.

Practising the full profit calculation chain

Question 4’s calculation chain — total revenue, total costs, profit, then average total cost — recurs across many exam papers in slightly different framings, so it is worth practising with several different sets of numbers until each step is automatic. Notice that average total cost can also be found by adding average fixed cost and average variable cost separately, which provides a useful cross-check: recalculating the same answer via a second method is a reliable way to catch an arithmetic slip before submitting a final answer, particularly in a calculation-heavy question worth several marks.

Where marks are usually lost

• Confusing total costs with average costs when a calculation question gives one and asks for the other.
• Listing economies of scale without distinguishing which are internal (firm-specific) and which are external (industry-wide).
• Giving only advantages of division of labour when the question explicitly asks for both an advantage and a disadvantage.
• Mislabelling economic sectors, for example describing a factory as tertiary rather than secondary.
• Naming an economy of scale without stating whether it is internal or external, when the question specifically asks for the distinction.
• Forgetting that division of labour, like most business economics concepts on this specification, requires both a benefit and a drawback to be discussed when a question asks for evaluation rather than description alone.

Linking this topic to the rest of the specification

Business Economics doesn’t stand alone: the cost and revenue concepts introduced here (1.2.3) are the foundation for later sub-topics on competition, where firms with different cost structures compete for market share, and for government intervention, where policies such as subsidies or taxes are analysed partly through their effect on a firm’s costs. A candidate who has secured fluency in calculating and interpreting total and average costs here will find those later sub-topics considerably more accessible, since the underlying cost concepts recur throughout the specification rather than being confined to this one topic.