Answer:
Step-by-step explanation:
The better value is the value that has the least cost per nail, so we can find that by dividing 3.99/20 and 2.99/10 to find the cost of each nail for both deals.
3.99/20 = 0.1995
2.99/10 = 0.299
The 20 nails cost £0.20 per nail and the 10 nails cost £0.30 per nail, so the better value is the 20 false nails for £3.99.
Solution: 20 false nails for £3.99