The mean of the ages of three friends is 22. If the mean of the ages of four friends is 24, then find the age of the fourth friend.
Given:
The mean of the ages of three friends is 22.
The mean of the ages of four friends is 24.
Formula Used:
Mean =
Solution:
Sum of ages of 3 friends = 22 × 3 = 66
Sum of ages of 4 friends = 24 × 4 = 96
Age of the fourth friend = 96 - 66 = 30
The age of the fourth friend is 30 years.
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