The average age of 14 friends is 14 years. If the age of 15th friend is added, then the average remains same. What is the age of the 15th friend?
Answer & explanation
Correct answer: option 3
ATQ,
Sum of ages of 14 friends = 14 x 14 = 196
Sum of ages of 15 friends = 14 x 15 = 210
Age of 15th friend = 210 - 196 = 14 years