Question
A mystery book costs twice as much as a pencil. Opal paid $4.90 for 3 books and 1 pencil. Find the cost of 1 pencil. Give your answer in dollars.
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A mystery book costs twice as much as a pencil. Opal paid $4.90 for 3 books and 1 pencil. Find the cost of 1 pencil. Give your answer in dollars.