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Ratio & ProportionAQAEdexcelOCRWJEC

Best Buy

Revise Best Buy in Ratio & Proportion for GCSE Mathematics with 12 exam-style questions and 22 flashcards. Use the notes, sample questions, and flashcards below to connect this topic to the rest of your GCSE revision plan.

Study this topic

1

What Is a Best Buy?

Introduction2

Key Methods for Best Buy

Key Facts3

Method: Finding the Best Buy

Deep Dive4

Worked Example 1: Basic Price Per Unit

Notes5

Worked Example 2: Multi-Buy Offer

Notes6

Worked Example 3: Percentage Discount vs Multi-Buy

Notes7

Common Mistakes

Notes8

Knowledge Organiser: Best Buy Comparisons

Summary

Sample Flashcards

What does BOGOF mean?
Buy One Get One Free. You pay for 1 item but get 2 items. Price per item = Normal price ÷ 2.
What does 'best buy' mean?
The option that gives the lowest cost per unit (per gram, per litre, per item). Calculate by dividing total price by quantity.

Exam questions for Best Buy

Which method correctly compares the value of two products?

  • A. Compare the total prices
  • B. Compare the cost per unit (e.g. cost per gram)
  • C. Choose the one with the larger pack size
  • D. Choose the one with the smaller pack size
1 markfoundation

Three sizes of shampoo are available: - Travel: 100 ml for 95p - Regular: 300 ml for £2.55 - Family: 500 ml for £4.00 Find the best value size. Show all working.

3 marksstandard

Want more? See all GCSE Mathematics exam questions by paper with full model answers and mark schemes.

12

exam-style questions

22

revision flashcards

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