SOLUTION: The average age of sons and their father is 20 years.If the average age of sons is 10 years,Find the age of their father.

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Question 855715: The average age of sons and their father is 20 years.If the average age of sons is 10 years,Find the age of their father.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Son's age = s1 & s2
father's age =f
(s1+s2+f)/3 = 20
s1+s2+f=60
(s1+s2)/2=10
s1+s2=20
.....
s1+s2+f=60
20+f=60
f=60-20
f=40
Father's age=40 years