Answer: 5 for $12
Explanation:
To get the cost per unit, divide the price by the number of items.
12/5 = 2.40 That is less than
10/4 = 2.50 per item.
Answer:
4 Books for $10
5 books for $12 would come to a total of $60, a high price.
However, 4 books for $10 comes to a total of $40, a lower price.
The price difference is $20.
Hope this helps :p
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