Civil Service Exam Reviewer · Averages · hard
The average of 23 test scores was computed as 63. Later it was found that a score of 60 had been recorded as 79. What is the correct average?
- 62.17
- 63.83
- 63
- 44
Answer
A. 62.17
Solution
Wrong sum = 1449. Correct sum = 1449 − 79 + 60 = 1430. Correct average = 62.17.
More Averages questions
- The average of five numbers is 42. Four of them are 26, 49, 34, 43. What is the fifth number?
- After 6 exams, Ramon's average is 88. What score on the next exam would raise the average to exactly 89?
- The average of a, b and c is 48, and the average of a and b is 35. What is c?
- In a 10-item quiz, the scores and number of students were: 5 (5), 6 (8), 7 (4), 8 (2), 9 (1), 10 (2). What is the mean score?
- The average monthly salary of 7 employees is ₱16,000. When the manager's salary is included, the average rises by ₱500. What is the…
- The average of 3 consecutive odd numbers is 39. What is the largest of these numbers?
- A bus travels 40 km at 50 km/h, then 80 km at 70 km/h, then 40 km at 60 km/h. What is its average speed for the whole trip?
- The average of 9 numbers is 23. The average of the first 5 is 24, and the average of the last 5 is 25. What is the middle (5th) number?
- The average age of 17 committee members increases by 1 year when a member aged 38 is replaced by a new member. How old is the new member?
- The average of 14 test scores was computed as 51. Later it was found that a score of 40 had been recorded as 48. What is the correct…