SOLUTION: A teacher is grading science tests for a class of 20 students. Each student can score between 0 and 100. If the average score of the first 12 students' tests is 65, what is the low
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Question 1021982: A teacher is grading science tests for a class of 20 students. Each student can score between 0 and 100. If the average score of the first 12 students' tests is 65, what is the lowest possible score that the 13th student's test can receive in order for the 20 students to reach a class average of 75?
Help solve this question please Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! The total is average * n=75*20=1500
12 students with an average of 65 have a total of 12*65=780
The 14-20 students (7) can't get higher than a 100, so if they all do, the total is 1480.
The 13th student must get the difference between 1500 and 1480, or 20.
