Question

The mean score of 8 students is 80, the mean score of 2 students is 90, what is the mean score of 10 students?​

Answer 1

Step-by-step explanation:

1. Mean score of 8 students = 80 , sum of scores of 8 students= 8*80= 640
2. Mean score of 2 students = 90, sum of scores of 2 students = 2*90= 180
3. total scores of 10 students= 640+180= 820
4. mean score of 10 students = 820/10=82

∴ 82 is the answer

Answer 2

Answer:

The answer is in the photo.

Step-by-step explanation:

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