Mathematics, 29.11.2019 08:31, NeemIsGreen

An order of 12 dozen rollerball pens and 5 dozen ballpoint pens cost $116. a later order 8 dozen rollerball pens and 12 dozen ballpoint pens cost $112. what was the cost of 1 dozen of pens? and how much does 1 dozen pencils cost?

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An order of 12 dozen rollerball pens and 5 dozen ballpoint pens cost $116. a later order 8 dozen rol...