Asked by Anonymous
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?
Answers
Answered by
Steve
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
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