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David Bhardwaj

· started a discussion

· 1 Months ago

ddgrghrgfdhrehfbdfhyrgcxgrsgdgretgdgdsgrsgdbrhbfhdfhffsyrsgdfgrdfbdrgerfdfgsefsgegsdgrdevdvb (Question:617931.0)

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Question:
The average marks of 42 students in an examination, were 64. Later it was found that the marks of three students were misread as 72, 58 and 44 instead of the actual marks 64, 42 and 26 respectively. What are the correct average marks?
Options:
A) 60
B) 61
C) 62
D) 63
E) None of these   
Solution:

The correct average marks-

= \(\ \ \ \ \left ( \cfrac {42(64)-(72+58+44)+(64+42+26)}{42} \ \ \ \ \ \ \ \ \ \ \ \ \ \right ) =63\)

Knowledge Expert

· commented

· 1 Months ago

Dear student,Please post your doubt clearly so that we can fix your issue. Keep learning with us. Regards, Team TR
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