Question
Mia wants to buy 18 identical pencils as follows.
1 for $4.80
5 for $22.80
What is the least amount of money she needs to buy 18 such pencils?
3 m

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Mia wants to buy 18 identical pencils as follows.
1 for $4.80
5 for $22.80
What is the least amount of money she needs to buy 18 such pencils?