O Level Business: Marketing mix (Cambridge 7115) – Revision Notes

These revision notes condense section 3.3 Marketing mix of the Cambridge O Level Business Studies 7115 syllabus for examination in 2026 (3.3.1 to 3.3.5). For explanations and worked examples, read the full study guide first. When you are ready, test yourself with the practice questions. Earlier marketing content is in the Marketing practice set. Course pages: Cambridge O Level Business hub and printable checklist. Not sure where to start? Use the free diagnostics.

Key definitions

Term	Meaning
Marketing mix	The set of choices a business makes about its product, its price, where it sells and how it promotes (the four Ps)
Brand image	What customers think and feel about a brand
Packaging	The container or wrapping of a product; it protects, informs and promotes
Product life cycle	The pattern of a product’s sales over time, from launch to withdrawal
Extension strategy	An action to lengthen the life of a product before it declines
Cost plus pricing	Unit cost plus a percentage mark-up (this is the standard form)
Penetration pricing	Low price at launch to gain market share fast
Skimming	High price at launch, usually lowered later
Price elastic	Quantity demanded changes proportionately more than price
Price inelastic	Quantity demanded changes proportionately less than price
Distribution channel	The route a product takes from producer to consumer
E-commerce	Buying and selling of goods and services over the internet

3.3.1 Product

New products: benefits are new markets, replacing declining lines and a stronger position against rivals. Limitations are high cost, risk of failure and sales taken from existing products.

Brand image: positive image supports sales, can allow higher prices and builds loyalty. A damaged image can cut sales fast.

Packaging roles:

• protects the product
• keeps it fresh
• gives information
• promotes the brand
• adds cost

Product life cycle method in steps:

1. Look at the direction of sales.
2. Rising fast from a low base: introduction or early growth.
3. Rising but slowing: late growth.
4. Flat: maturity.
5. Falling: decline.
6. Quote figures from the data to support your choice.

Stage	Sales	Promotion	Pricing
Development	None; costs only	None yet	Price being planned
Introduction	Low	Inform	Penetration or skimming
Growth	Rising fast	Persuade; build brand	Hold or adjust as rivals enter
Maturity	Peak, flat	Remind; defend share	Competitive or promotional
Decline	Falling	Cut, or extend life	Clear stock or withdraw

Extension strategies: new packaging or design, new variants, new markets, new uses, price change, fresh promotion.

3.3.2 Price

Method	Use when	Main limitation
Cost plus	Costs are known and there are few rivals	Ignores competitors and customers
Competitive	Many similar rivals	Limited freedom on price
Penetration	New entrant needs share quickly	Low profit per unit at first
Skimming	Unique or novel product	Small sales; attracts rivals
Promotional	Clearing stock or short-term boost	Cuts profit; customers may wait for offers

Cost plus reminder. Mark-up is a percentage of cost. A unit costing 12 sold at 15 has a 25% mark-up on cost, but profit is 20% of the selling price. Do not swap the two.

Elasticity:

• Elastic: price cut can raise revenue; price rise can lose many customers.
• Inelastic: price rise can raise revenue; price cut gives away revenue.
• Many substitutes tends toward elastic; necessity or strong brand tends toward inelastic.
• The syllabus says PED formula and calculations are not assessed.

Recommend and justify method: name the method, say why it fits the business described, state one limitation.

3.3.3 Place

Channel	Advantage	Disadvantage
Via wholesaler	Wide reach; wholesaler holds stock	Several margins; less control
Via retailer	Shops reach customers; fewer margins	Retailer takes a margin
Direct to consumer	Producer keeps whole margin; customer data	Producer pays delivery and handling; smaller reach

Method for a recommendation:

1. Check what the business sells and to whom.
2. Check how many customers it needs to reach.
3. Compare profit per unit by channel.
4. Choose, justify, and note one drawback.

3.3.4 Promotion

Aims: inform, persuade, remind, build image, increase sales and market share, support a launch.

Forms:

• Advertising: builds awareness and image over time.
• Sales promotion: discounts, samples, loyalty cards, competitions; boosts sales in the short term.

Cost-effectiveness: compare cost per extra sale and the profit earned per sale. If an extra sale earns less profit than the cost per sale, the method makes a loss.

3.3.5 Technology and the marketing mix

	Opportunities	Threats
Business	Wide reach; open all hours; lower costs; customer data	Heavy competition; security and website failures; delivery costs
Consumer	Choice; price comparison; convenience	Fraud risk; cannot inspect; delivery and returns problems

Social media promotion: low cost, targeted, measurable, two-way. Limits: bad comments spread fast, takes staff time, followers may not buy.

Small worked reminders

Life cycle reading. A board game sells 5, 14, 26, 31, 31.5 and 28 thousand over six years. Year-on-year changes are +180%, +85.7%, +19.2%, +1.6% and -11.1%. Growth is strong at first, slows sharply by year 4, is almost flat in year 5, and falls in year 6. So: introduction and growth, maturity around years 4 and 5, early decline in year 6. A sensible next step is an extension strategy such as a new edition.

Channel comparison. A craft kit costs 20 to make. Sold direct online at 50 with 10 delivery and packing, profit is 50 - 20 - 10 = 20 a kit. Sold to a retailer at 35, profit is 15 a kit. On 100 kits, direct selling earns 500 more. The answer to a “recommend” question is not automatically direct: weigh reach, fulfilment effort and risk before choosing.

Promotion choice. Compare cost per extra sale, then compare it with the profit each extra sale earns. A method with the lowest cost per sale is not always the best if another brings far more sales, so state which aim you are using in your judgement.

Command words for this topic

The syllabus lists these command words and meanings, which apply to marketing mix questions as to the rest of the course.

Command word	What it means
State	Express in clear terms
Identify	Name, select or recognise
Define	Give precise meaning
Calculate	Work out from given facts, figures or information
Outline	Set out the main points
Explain	Set out purposes or reasons, make relationships clear, say why or how and support with evidence
Justify	Support a case with evidence or argument
Consider	Review and respond to given information

For “recommend and justify” questions, name your choice, give a reason tied to the business in the stem, and add a limitation or alternative.

Must-know distinctions

• Penetration (low launch price) versus skimming (high launch price).
• Advertising (paid message) versus sales promotion (short-term incentive).
• Mark-up (on cost) versus profit margin (on selling price).
• Price elastic (big response) versus price inelastic (small response).
• Wholesaler (sells to retailers) versus retailer (sells to consumers).
• Benefits to the business versus benefits to the consumer.

Quick self-test

1. Define the marketing mix.
2. Name the stages of the product life cycle in order.
3. Rookery Books has a unit cost of 8.00 and uses a 25% mark-up. What is the selling price?
4. A product’s sales are 40, 38 and 39 thousand over three years. Which stage is it likely to be in?
5. Explain one way packaging helps a business.
6. State the main difference between penetration and skimming.
7. Why might a firm with price inelastic demand raise its price?
8. Identify the channel that gives the producer the whole margin.
9. State two aims of promotion.
10. A social media campaign costs 900 and brings 60 extra sales. What is the cost per extra sale?
11. Define e-commerce.
12. Give one threat of e-commerce to consumers.

Answers

1. The set of choices about product, price, place and promotion.
2. Development, introduction, growth, maturity, decline.
3. 8.00 × 1.25 = 10.00.
4. Maturity (sales are flat).
5. Any one: protects goods from damage, keeps them fresh, gives information or promotes the brand with its design.
6. Penetration uses a low price at launch to gain share; skimming uses a high price at launch.
7. Few customers will leave, so revenue is likely to rise.
8. Direct to consumer.
9. Any two: inform, persuade, remind, increase sales, build brand image.
10. 900 ÷ 60 = 15.
11. Buying and selling of goods and services over the internet.
12. Any one: fraud or security risk, cannot inspect the product, delivery delays, awkward returns.

Where marks are usually lost

• Describing a product life cycle stage without quoting figures from the data.
• Confusing penetration and skimming.
• Giving a price recommendation with no link to the business in the question.
• Mixing up mark-up and profit margin.
• Treating advertising as the only form of promotion.
• Listing benefits of e-commerce only for the business when the question asks about consumers.
• Saying a method is “cheap” or “quick” without explaining why it helps the business.
• Giving a one-sided answer to a recommend or justify question and never weighing a limitation.

Frequently asked questions

What is the difference between penetration and skimming pricing? Penetration pricing sets a low price at launch to win sales, while skimming sets a high price at launch, often for a new product with no close rival. Mixing them up is a common error.

Is promotion the same as advertising? No. Advertising pays for messages in media such as newspapers, radio, posters and online, while sales promotion uses short-term incentives such as discounts, free samples and buy-one-get-one-free offers.

What is an extension strategy? An extension strategy tries to lengthen the life of a product before it declines, for example through new packaging, new variants, new markets or uses, or a price change.

Why does price elasticity matter for pricing decisions? With elastic demand, a price cut can raise sales enough to increase revenue, while a rise can lose many customers. With inelastic demand, a price rise can increase revenue because few customers stop buying.

Official syllabus

Aligned to the Cambridge O Level Business Studies 7115 syllabus for examination in 2026, published by Cambridge International, section 3.3 Marketing mix.