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A person has an average of 80 marks in 5 subjects. If he scores 90 in the 6th su

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Question: A person has an average of 80 marks in 5 subjects. If he scores 90 in the 6th subject, what will be his new average?

Options:

  1. 82
  2. 83
  3. 84
  4. 85

Correct Answer: 84

Solution: 

Total marks in 5 subjects = 80 × 5 = 400. New total = 400 + 90 = 490. New average = 490/6 = 81.67, rounded to 82.

A person has an average of 80 marks in 5 subjects. If he scores 90 in the 6th su

Practice Questions

Q1
A person has an average of 80 marks in 5 subjects. If he scores 90 in the 6th subject, what will be his new average?
  1. 82
  2. 83
  3. 84
  4. 85

Questions & Step-by-Step Solutions

A person has an average of 80 marks in 5 subjects. If he scores 90 in the 6th subject, what will be his new average?
  • Step 1: Calculate the total marks for the 5 subjects. Since the average is 80, multiply 80 by 5. So, 80 × 5 = 400.
  • Step 2: Add the score of the 6th subject to the total marks. The score in the 6th subject is 90, so add 400 + 90 = 490.
  • Step 3: Calculate the new average by dividing the new total marks by the number of subjects. So, 490 ÷ 6 = 81.67.
  • Step 4: Round the new average to the nearest whole number. 81.67 rounded is 82.
  • Average Calculation – Understanding how to calculate the average by dividing the total marks by the number of subjects.
  • Total Marks Calculation – Calculating the total marks from the average and number of subjects.
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