Question
Hazel wants to buy 20 identical staplers as follows.
1 for $3.70
6 for $20.70
What is the least amount of money she needs to buy 20 such staplers?
3 m

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Hazel wants to buy 20 identical staplers as follows.
1 for $3.70
6 for $20.70
What is the least amount of money she needs to buy 20 such staplers?