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March 25, 2017

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The average score on a reading test for 58 students was 87.3. Twelve more students took the test. The average of the 12 students was 90.7. What was the average for all students?

  • math - ,

    58 * 87.3 = 5063.4
    12 * 90.7 = 1088.4

    5063.4 + 1088.4 = 6,151.8

    6,151.8 / 70 = 87.9

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