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The age of the father is twice the sum of the age of his son after 2 years his age will be equal to the sum of the age of his children find the age of the father?
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The age of the father is twice the sum of the age of his son after 2 y...
Let the sum of the ages of two children will be x and age of father will be y.
A.T.Q. , 
y = 2x       --(i)
and , After 20 years,
x+40=y+20 
=> x-y= -20
put y = 2x from (i),
x-2x = -20
=> x = 20
Now, put x= 20 in (i),
y = 2 x 20 = 40
Hence age of father will be 40 years.
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