The average age of 4 friends is 25 years. A new friend joins, and the average becomes 26. Find the new friend's age.
- A. 30 ✓
- B. 28
- C. 26
- D. 32
Correct answer
A. 30
Explanation
Total age of 4 = 100. Total of 5 = 130. New friend's age = 130-100 = 30.
A. 30
Total age of 4 = 100. Total of 5 = 130. New friend's age = 130-100 = 30.