SOLUTION: The mean of ages of 8 brothers is 2o but when the age of their mother is added, the mean age becomes 25. What is the age of their mother

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Question 1143655: The mean of ages of 8 brothers is 2o but when the age of their mother is added, the mean age becomes 25. What is the age of their mother
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!
Answer by ikleyn(52803)   (Show Source): You can put this solution on YOUR website!
.

Since the mean of 8 brothers is 20, the sum of their age is 8*20 = 160.


Now the equation to solve the problem is


     = 25.


Solve it to find M, the mother's age.

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