Worked Example 1: Basic Price Per Unit
Part of Best Buy — GCSE Mathematics
This study notes covers Worked Example 1: Basic Price Per Unit within Best Buy for GCSE Mathematics. Revise Best Buy in Ratio & Proportion for GCSE Mathematics with 12 exam-style questions and 22 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 4 of 7 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 4 of 7
Practice
12 questions
Recall
22 flashcards
Worked Example 1: Basic Price Per Unit
Which is better value: 250g of butter for £2.40 or 400g for £3.60?
Step 1 Calculate price per gram for first option
250g for £2.40
Price per gram = £2.40 ÷ 250 = £0.0096 per gram
Or 0.96p per gram
Step 2 Calculate price per gram for second option
400g for £3.60
Price per gram = £3.60 ÷ 400 = £0.009 per gram
Or 0.9p per gram
Final Compare and decide
0.9p per gram < 0.96p per gram
400g for £3.60 is better value