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The average marks of 50 students in an examination was 65. It was later found that the marks of one student had been wrongly entered as 83 instead of 38. The correct average is:
  • a)
    63.9
  • b)
    64.5
  • c)
    64.7
  • d)
    64.1
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The average marks of 50 students in an examination was 65. It was late...
According to the problem statement
⇒ New average = (50 × 65 – 83 + 38)/50
⇒ New average = 3205/50 = 64.1
∴ New average is 64.1
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Most Upvoted Answer
The average marks of 50 students in an examination was 65. It was late...
According to the problem statement
⇒ New average = (50 × 65 – 83 + 38)/50
⇒ New average = 3205/50 = 64.1
∴ New average is 64.1
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Community Answer
The average marks of 50 students in an examination was 65. It was late...
According to the problem statement
⇒ New average = (50 × 65 – 83 + 38)/50
⇒ New average = 3205/50 = 64.1
∴ New average is 64.1
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The average marks of 50 students in an examination was 65. It was later found that the marks of one student had been wrongly entered as 83 instead of 38. The correct average is:a)63.9b)64.5c)64.7d)64.1Correct answer is option 'D'. Can you explain this answer?
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