Question 1072398: There is three Persons grandson, father and grandfather and their aggrigated age is 140 . Grandfather is 12 times older than grandson and father is 7 times older than son . Find their different three ages .
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! There is three Persons grandson, father and grandfather and their aggregated age is 140.
s + f + g = 140
:
Grandfather is 12 times older than grandson
g = 12s
and father is 7 times older than son.
f = 7s
Find their different three ages.
In the first equation, replace g with 12s, and replace f with 7s
s + 7s + 12s = 140
20s = 140
s = 140/20
s = 7 yrs is the grandson's age
:
I'll let you find g and f, ensure that the ages add up to 140
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