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CEMC Gauss (Grade 7), 2008

Algebra Difficulty 1.0 Junior Find the answer Canada

Rishi got the following marks on four math tests: $71$ , $77$ , $80$ , and $87$ . He will write one more math test. Each test is worth the same amount and all marks are between $0$ and $100$ . Which of the following is a possible average for his five math tests?

(A) $88$ (B) $62$ (C) $82$ (D) $84$ (E) $86$

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