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CEMC Gauss (Grade 8), 2001

Algebra Difficulty 2.0 Junior Find the answer Canada

Daniel's age is one-ninth of his father's age. One year from now, Daniel's father's age will be seven times Daniel's age. The difference between their ages is

(A) $24$ (B) $25$ (C) $26$ (D) $27$ (E) $28$

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