- A15 years
- B14 years
- C16 years
- D17 years
Step-by-Step Solution
Sum of 5 ages = . New total = 70 + 20 = 90. New mean = 90 / 6 = 15 years.
Answer: A) 15 years
The mean age of 5 friends is 14 years.
A sixth friend, aged 20 years, joins the group.
Find the new mean age of the 6 friends.
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