Question

9. The mean of eight numbers is 27. If one more number is included, then the mean is 26.
Find the included number.
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Answer 1

Answer:

5.8

Step-by-step explanation:

Answer 2

Answer:

Included number is 18

Step-by-step explanation:

Sum of 8 numbers: 8×27

: 216

Sum of 9 numbers: 26×9

:234

New number is:

234-216

18