The mean of 8 numbers is 27. If 1 number is included,then the mean is 26. Find the included number.
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Answered by
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The mean of 8 numbers = 27
The sum of 8 numbers = 27 × 8 = 216
One number is included. Let the number = x
Then, the mean of 9 numbers = 26
The sum of 9 numbers = 26 × 9 = 234
The included number (x) = 234 - 216 = 18
If my answer helps you then mark my answer as Brainliest
The sum of 8 numbers = 27 × 8 = 216
One number is included. Let the number = x
Then, the mean of 9 numbers = 26
The sum of 9 numbers = 26 × 9 = 234
The included number (x) = 234 - 216 = 18
If my answer helps you then mark my answer as Brainliest
Answered by
1
Answer:
THE MEAN OF 8 NO.S = 27
THE SUM OF 8 NO.S= 27 X 8=216
ONE OF NO. IS INCLUDED LET THE NO. BE x
THEN THE MEAN OF 9 NO.S= 26
THE SUM OF 9 NO.S= 26 X 9=234
THE INCLUDED NO.(x)= 234 - 216
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