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Pencil and Eraser

Algebra Level 1

A pencil and an eraser cost a dollar and ten cents. The eraser costs a dollar more than the pencil. How much does the pencil cost (in cents)?

Excel in math and science

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It's hard to learn from lectures and videos

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Our wiki is made for math and science

Master advanced concepts through explanations,
examples, and problems from the community.

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including olympiad champions, researchers, and professionals.

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by Claire Meng

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