Question
Elizabeth wants to buy 20 identical pencils as follows.
1 for $4.30
6 for $23.40
What is the least amount of money she needs to buy 20 such pencils?
3 m

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Elizabeth wants to buy 20 identical pencils as follows.
1 for $4.30
6 for $23.40
What is the least amount of money she needs to buy 20 such pencils?