Question

If the mean marks of 5 subjects is 65 and in 6 subject the marks are 20 more then mean then find mean of 6 subjecs

Answer 1

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Here is your answer
Mean of 5 Subject is 65
Sum of 5 Subject = Mean × Total Number
$= 65 \times 5 \\ = 325$
Sixth Subject Marks is 65+ 20 = 85

Sum of 6 Subject = 325 + 85
= 410

Mean of 6 Subject = 410/6
= 68.33

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