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There can be no proper answer as the father will not live to be 150 years old.

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6y ago
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Q: How old is a boy who is twice as old as his sister and half as old as their father.In 50 years his sister will be half as old as their father?
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A boy is 17 years old and his sister is twice as old when the boy is 23 years old what will be the age of this sister?

The boy's sister would then be 34. do the math.


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