equirement for a 'double coincidence of wants' inherent in a barter system B1\n- Applies this to the aerospace satellite industry, where firms produce highly niche, complex components (such as ion thrusters, payload transponders, or solar attitude sensors) M1\n- Explains how this enables workers/firms to focus exclusively on their narrow task, buying specialised inputs and consumer goods with money, which drives productivity and a deeper division of labour A1","marks":3,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"explain_chain","label":"Build the explanation chain","steps":[{"type":"text","order":0,"title":"Define the function","content":"A **medium of exchange** is something widely accepted as payment for goods and services. Here, that is money: it lets a buyer pay a seller directly, rather than swapping one product for another.","highlights":[{"text":"function of money as a medium of exchange","location":"specification"}]},{"type":"text","order":1,"title":"Contrast with barter","content":"Without money, trade would use **barter**. A trade can then happen only when there is a **double coincidence of wants**: each side must want exactly what the other side can offer. Money removes this requirement, because a seller can accept money even when they do not want the buyer's product.","highlights":[{"text":"medium of exchange","location":"specification"}]},{"type":"text","order":2,"title":"Apply it to satellites","content":"Apply this to commercial aerospace satellites. Different firms can specialise in very niche, complex components, such as an ion thruster, a payload transponder, or a solar attitude sensor, and sell these components for money. This precise industry application earns **M1**.","highlights":[{"text":"commercial aerospace satellites","location":"specification"}]},{"type":"text","order":3,"title":"Link to specialisation","content":"Because the specialist firm receives money, it can use that money to buy the other specialised inputs it needs and the consumer goods its workers want. It does not need to make those things itself or find direct barter partners. Therefore, workers and firms can focus exclusively on their narrow task; this raises productivity and enables a deeper division of labour. This developed causal link earns **A1**.\n\nFor full marks, make the chain explicit: **money removes the barter problem → satellite firms specialise in components → greater productivity and division of labour**.","highlights":[{"text":"deeper division of labour","location":"specification"}]}]}],"generatedAt":"2026-07-21T04:57:08.479Z","modelVersion":"gpt-5.6-terra","explanationVersion":"v3"},"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"70426e6a-5ca9-4b29-b922-e8131d4661cc","revisionId":"35a1fa36-287f-4d70-b822-0ce00fb293bc","questionNumber":null,"questionType":"LA","specification":"","difficulty":3,"difficultyBand":"medium","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"b61b0168-8cb6-484b-ba10-3df873b675fa","label":null,"content":"Explain one advantage of the division of labour in garment manufacturing.","markscheme":"- Identifies a valid advantage of the division of labour (e.g. increased productivity, specialisation leading to dexterity, time saved by not switching jobs/tools, or ease of training) B1\n- Applies the concept directly to garment manufacturing (e.g. referencing specific tasks like fabric cutting, sleeve stitching, button sewing, or pattern designing) B1\n- Analyzes the consequence of this advantage for the firm (e.g. leads to a higher output per worker-hour, lower unit costs of production, or improved consistency and quality of the finished clothing) A1","marks":3,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"specialisation_example","label":"Explain using a garment example","steps":[{"type":"text","order":0,"title":"Name one advantage","content":"Choose **increased productivity** as the advantage. Division of labour m

1.1 Nature of economics

Question 13

1.1 Nature of economics Questions

1.1 Nature of economics

Question 13

1.1 Nature of economics Questions