Algebra

The 22 students present for a recent test in Ms. Huang’s class had an average score of 88. When students who were absent took the test, three scored 4 points higher than the average and two scored one point higher than the average. What is the new class average when the new scores are included?

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  1. total points scored: 22*88 = 1936
    Now we add 5 scores, increasing the total by 3*92 + 2*89 = 454

    So, the new average for 27 students is

    (1936+454)/(22+5) = 88.52

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    posted by Steve

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