The sum of two children is a the age of the father is twice the a after 20 years his age will be equal to the addition of the ages of the children find the age of father
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A. T. Q,sum of the age'z of two children is X+y=a........ (1)
1 ) Age of father will be twice the age of children Z=2a.......... (2)
2 )After 20yrs
Age will be, Z+20=x+y+40
By using 1 and 2 eq.
We get 2a+20=a+40
a=20
Therefore, father's age will be 40 yrs(2a).
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