mean of the mean of 6 numbers is 20 if one number is excluded the mean is 15 find the value of excluded number
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1st mean -2nd mean
i.e, 20-15 = 5
5 is the value which is excluded
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Answered by
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Hey friend, Here is your answer-
Let the sum of numbers is x.
x / 6 = 20
x = 120
Therefore, sum is 120.
Let y be the excluded number.
Therefore ,
120 - y / 6 = 15
120 - x = 90
- y = 90 - 120
- y = - 30
y = 30
The excluded number is 30.
Hope it will help you.
Let the sum of numbers is x.
x / 6 = 20
x = 120
Therefore, sum is 120.
Let y be the excluded number.
Therefore ,
120 - y / 6 = 15
120 - x = 90
- y = 90 - 120
- y = - 30
y = 30
The excluded number is 30.
Hope it will help you.
no
its wrong
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the aswer
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fida
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Hey friends , my answer is right. Check again please
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