A student scores 70, 80, and 90 in three subjects. If he scores 100 in the fourt

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Question: A student scores 70, 80, and 90 in three subjects. If he scores 100 in the fourth subject, what will be his average score?

Options:

Correct Answer: 90

Solution:

Total score = 70 + 80 + 90 + 100 = 340. Average = 340 / 4 = 85.

A student scores 70, 80, and 90 in three subjects. If he scores 100 in the fourth subject, what will be his average score?

A student scores 70, 80, and 90 in three subjects. If he scores 100 in the fourth subject, what will be his average score?

Step 1: Write down the scores the student received in the three subjects: 70, 80, and 90.
Step 2: Add the score of the fourth subject, which is 100.
Step 3: Calculate the total score by adding all the scores together: 70 + 80 + 90 + 100.
Step 4: Perform the addition: 70 + 80 = 150, then 150 + 90 = 240, and finally 240 + 100 = 340.
Step 5: Count the total number of subjects, which is 4 (three subjects plus the fourth subject).
Step 6: To find the average score, divide the total score (340) by the number of subjects (4).
Step 7: Perform the division: 340 ÷ 4 = 85.
Step 8: The average score is 85.

Average Calculation – The average score is calculated by summing all individual scores and dividing by the number of subjects.
Basic Arithmetic – Understanding addition and division is essential for calculating the total score and average.