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) (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
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