A class has an average score of 75. If one student scored 90, what is the averag

A class has an average score of 75. If one student scored 90, what is the average score of the remaining students if there are 20 students in total?

A class has an average score of 75. If one student scored 90, what is the average score of the remaining students if there are 20 students in total?

Step 1: Calculate the total score of the class by multiplying the average score by the number of students. Total score = 75 (average) * 20 (students) = 1500.
Step 2: Subtract the score of the student who scored 90 from the total score. New total score = 1500 - 90 = 1410.
Step 3: Determine the number of remaining students after removing the one student. Remaining students = 20 - 1 = 19.
Step 4: Calculate the average score of the remaining students by dividing the new total score by the number of remaining students. Average score = 1410 / 19 = 74.21.
Step 5: Round the average score to the nearest whole number. The rounded average score is 74.

Average Calculation – Understanding how to calculate the average score of a group by summing individual scores and dividing by the number of individuals.
Total Score Calculation – Calculating the total score of a class based on the average and the number of students.
Impact of Removing a Score – Understanding how removing an individual score affects the overall average of the remaining group.