Mathematics, 24.02.2021 03:30 raquelqueengucci25

16 The table shows the mean scores of three classes in a history test. Mean Scores by Three Classes
Class
Mean Number of Points
A
8
B
6
С
9
The mean score of all the students in classes A and B combined is 6.8.
The mean score of all the students in classes B and C combined is 7.
If the number of students in classes A, B, and C are denoted by a, b,
and c respectively, find the ratio a: b:c.

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