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Several students have taken an exam . T...

Several students have taken an exam . There was an error in the answer key which affected the marks of 48 students , and their average marks reduced from 78 to 66 . The average of remaining students increased by 3.5 marks . This resulted the reduction of the average of all students by 4.5 marks . The number of students that attended the exam is :

A

96

B

84

C

93

D

100

Text Solution

Verified by Experts

The correct Answer is:
C
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GAGAN PRATAP -ALLIGATION-ALLIGATION (SHEET-3)
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  4. The average weight of the boys in a class is 69.3 kg and that of the g...

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  5. In a class of 50 students, 40% are girls. The average marks of the who...

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  6. In a class of 240 students, 37.5% are boys and the remaining are girls...

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  7. The number of students in a class is 75, out of which 33 1/3% are boy...

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  9. The total number of students in section A and B of a class is 110. The...

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  11. In a school 4/9 of the number of students are girls and the rest are b...

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