Multiple choice

The average marks obtained by Subhi in 6 subjects is 88. On subsequent verification it was found that the marks obtained by her in a subject was wrongly copied as 86 instead of 68. The correct average of the marks obtained by her is

  1. 87

  2. 85

  3. 84

  4. 86
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Original total marks = 88 × 6 = 528. The error is 86 - 68 = 18 marks (excess). Correct total = 528 - 18 = 510. Correct average = 510 ÷ 6 = 85.

Keep practicing — related questions