SOLUTION: A total of 50 juniors and seniors took a math test. The 35 juniors attained an average of 80 while the 15 seniors attained a 70. What was the average score for all 50 students who
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Question 133419: A total of 50 juniors and seniors took a math test. The 35 juniors attained an average of 80 while the 15 seniors attained a 70. What was the average score for all 50 students who took the test?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
If 35 juniors averaged 80, the total of all their scores must have been . Likewise, the total of all the seniors' scores must have been . So the total of all 50 students' scores is , and the average is
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