Numeracy Foundation June 2023 Unit 1 Q4
4.
| Small bottle 30 ml for £1.20 | Medium bottle 40 ml for £1.56 | Large bottle 50 ml for £2.25 |
Katelyn is buying some medicine.
Which size bottle of medicine offers the best value for money?
You must show all your working. [3]
| Scheme | Marks | Comments |
|---|---|---|
| Method of comparison, e.g. per 10 ml or for 600 ml, or divide the cost of 30 ml by 3 and multiply by 4 or 5, or similar | M1 | Needs to show attempt to compare at least 2 of the 3 sizes |
| Correctly evaluated comparison of 2 of the 3 sizes | A1 | Ignore incorrect units With a 1 ml comparison, allow truncation to 4p for large and 3p for medium, provided no incorrect working is seen, for the award of the first A1. Award of final A1 also possible if a full comparison and conclusion is ‘Medium’ |
| Correctly evaluated comparison of all 3 sizes, may be different comparisons at different stages, AND conclusion ‘Medium’ or ’40 ml’ bottle is the best value for money | A1 | Consistent units that are not obviously incorrect are required, or allow no units given Comparison of small / medium and medium / large IS a full comparison of all 3 sizes Comparison of small / medium and small / large IS a full comparison of all 3 sizes Comparison of medium / large and small / large IS NOT a full comparison of all 3 sizes |