Question
Hazel wants to buy 18 identical notebooks as follows.
1 for $4.70
5 for $22.10
What is the least amount of money she needs to buy 18 such notebooks?
3 m

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Hazel wants to buy 18 identical notebooks as follows.
1 for $4.70
5 for $22.10
What is the least amount of money she needs to buy 18 such notebooks?