Jay’s father is twice as old as jay. in 20 years jay will be two thirds as old as his father. find the number

Let the age of Jay be x years, so age of Jay's father is 2x years .

After 20 years,

Jay's age will be

And Jay's father age will be

But at that time, jay's  age will be

So we have

Cross multiplication

Therefore Jay's age is 20 years and Jay's Father's age is 40 years .

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