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27 August, 08:42

A total of 50 juniors and seniors were given a mathematics test. The 35 juniors attained an average score of 80 while the 15 seniors attained an average of 70. What was the average score for all 50 students who took the test?

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  1. 27 August, 11:23
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    77

    Step-by-step explanation:

    Firstly, we need to calculate the total score of the junior students and the total score of the senior students.

    The total score of the junior students is 35 * 80 = 2,800

    The total score of the senior students is 15 * 70 = 1050

    The total score is thus 2,800 + 1,050 = 3,850

    The average score of the 50 students is thus 3,850/50 which equals 77
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