The average marks in English subject of a class of 24 students is 56. If the marks of three students were misread as 44, 45 and61 of the actual marks 48, 59 and 67 respectively, then what would be the correct average ?

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The average marks in English subject of a class of 24 students is 56. If the marks of three students were misread as 44, 45 and61 of the actual marks 48, 59 and 67 respectively, then what would be the correct average ?

A56

B55

C57.5

D57

Nithin K ? May 24 '2017 at 20:51

Anwer is : 57

Explanation:

Difference = 48 + 59 + 67 - 44 - 45 - 61= 24

Correct average = \(56+ \frac{ 24}{24} = 57\)

 

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Anwer is : 57 Explanation: Difference = 48 + 59 + 67 - 44 - 45 - 61= 24 Correct average = \(56+ \frac{ 24}{24} = 57\)   Nithin K ? answered May 24 '2017 at 20:51 All Comments

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