SOLUTION: A son asked his father how old he was and the father replied your age is now one quarter of mine but five years ago it was only one-fifth. How old is the father ?

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Question 1141154: A son asked his father how old he was and the father replied your age is now one quarter of mine but five years ago it was only one-fifth. How old is the father ?
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
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...,your age is now one quarter of mine but five years ago it was only one-fifth. How old is the father ?
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f, father
x, son
system%28f=4x%2Cx-5=%281%2F5%29%28f-5%29%29

5x-25=f-5
5x-25=4x-5
x=25-5
x=20
-
f=4%2Ax
highlight%28f=20%29