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A group of students has an average attitude score of 60. If one student with a s

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Question: A group of students has an average attitude score of 60. If one student with a score of 90 joins the group, what will be the new average if the group had 5 students initially?

Options:

  1. 65
  2. 66
  3. 67
  4. 68

Correct Answer: 66

Solution: 

New total score = (60 * 5) + 90 = 390. New average = 390 / 6 = 65.

A group of students has an average attitude score of 60. If one student with a s

Practice Questions

Q1
A group of students has an average attitude score of 60. If one student with a score of 90 joins the group, what will be the new average if the group had 5 students initially?
  1. 65
  2. 66
  3. 67
  4. 68

Questions & Step-by-Step Solutions

A group of students has an average attitude score of 60. If one student with a score of 90 joins the group, what will be the new average if the group had 5 students initially?
  • Step 1: Calculate the total score of the initial group of students. Since the average score is 60 and there are 5 students, multiply 60 by 5. This gives you 60 * 5 = 300.
  • Step 2: Add the score of the new student who joins the group. The new student has a score of 90, so add this to the total score from Step 1. This gives you 300 + 90 = 390.
  • Step 3: Count the new total number of students in the group. Initially, there were 5 students, and now one more student joins, making it 5 + 1 = 6 students.
  • Step 4: Calculate the new average score by dividing the new total score by the new number of students. This gives you 390 / 6 = 65.
  • Average Calculation – Understanding how to calculate the average score by summing total scores and dividing by the number of students.
  • Impact of Adding a New Member – Recognizing how the addition of a new score affects the overall average of a group.
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