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math

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To get a C in physics, a student must score an average of 70 on four tests. Scores on the first three tests were 63, 85, and 82. What is the lowest score the student can make on the last test and still get a C?

  • math -

    4 * 70 = 280

    63 + 85 + 82 = 230

    280 - 230 = 50

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