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The average score of a class of 30 students is 75. If one student scored 90, wha

Practice Questions

Q1
The average score of a class of 30 students is 75. If one student scored 90, what is the average score of the remaining students?
  1. 74
  2. 75
  3. 76
  4. 77

Questions & Step-by-Step Solutions

The average score of a class of 30 students is 75. If one student scored 90, what is the average score of the remaining students?
  • Step 1: Calculate the total score of all 30 students by multiplying the average score by the number of students. Total score = 30 * 75.
  • Step 2: Subtract the score of the student who scored 90 from the total score. New total = Total score - 90.
  • Step 3: Calculate the new average score for the remaining 29 students by dividing the new total score by 29. New average = New total / 29.
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