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A teacher has 5 students with an average score of 75. If one student scores 90,

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Question: A teacher has 5 students with an average score of 75. If one student scores 90, what will be the new average score of the 6 students?

Options:

  1. 76
  2. 77
  3. 78
  4. 79

Correct Answer: 78

Solution: 

Total score of 5 students = 5 * 75 = 375. New total score = 375 + 90 = 465. New average = 465 / 6 = 77.5.

A teacher has 5 students with an average score of 75. If one student scores 90,

Practice Questions

Q1
A teacher has 5 students with an average score of 75. If one student scores 90, what will be the new average score of the 6 students?
  1. 76
  2. 77
  3. 78
  4. 79

Questions & Step-by-Step Solutions

A teacher has 5 students with an average score of 75. If one student scores 90, what will be the new average score of the 6 students?
  • Step 1: Calculate the total score of the 5 students. Multiply the average score (75) by the number of students (5). So, 5 * 75 = 375.
  • Step 2: Add the score of the new student (90) to the total score of the 5 students. So, 375 + 90 = 465.
  • Step 3: Calculate the new average score. Divide the new total score (465) by the new number of students (6). So, 465 / 6 = 77.5.
  • Average Calculation – Understanding how to calculate the average score by dividing the total score by the number of students.
  • Total Score Calculation – Calculating the total score of a group of students based on their average score.
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