the age of the father is twice the sum of the ages of his children. after 20 years , his age will be equal to the sum of the ages of his chikdren. find his age
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Let the sum of the ages of two children be x and age of father be y
A.T.Q.
y = 2x......(i)
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 = 2×20 = 40
Hence age of father will be 40 years.......
I hope this is helpful...
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