Tea Biscuits can be bought in packets of 20 or packets of 24 - OCR - GCSE Maths - Question 5 - 2018 - Paper 1
Question 5
Tea Biscuits can be bought in packets of 20 or packets of 24.
All biscuits are identical in size and quality.
Nada says
The packet of 24 biscuits is better value.
... show full transcript
Worked Solution & Example Answer:Tea Biscuits can be bought in packets of 20 or packets of 24 - OCR - GCSE Maths - Question 5 - 2018 - Paper 1
Step 1
Correct unit cost for 20 biscuits
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Answer
To determine the unit cost of the packet with 20 biscuits, divide the total cost by the number of biscuits:
Cost of 20 biscuits = £1.50
Unit cost = ( \frac{1.50}{20} = 0.075 ) pounds per biscuit.
Step 2
Correct unit cost for 24 biscuits
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Answer
Next, calculate the unit cost for the packet containing 24 biscuits:
Cost of 24 biscuits = £1.80
Unit cost = ( \frac{1.80}{24} = 0.075 ) pounds per biscuit.
Step 3
Conclusion
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Answer
Both packets have the same unit cost of £0.075 per biscuit. Therefore, Nada is incorrect because neither packet is better value; they are equal in value.
