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John is twice as old as bob and half as old as jean if jean is 40 years old how old is barry and who is the eldest of the three

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No answer available - Barry isn't mentioned in the equation, and there are four people mentioned in the question.

Posted on Apr 05, 2011

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If Jean is 40, then John is 20 because he is half as Jean's age (40/2), and because John is 20, Bob is 10 since he is twice as old as Bob (20/2). Therefore, Jean is the eldest of the three.
Hope this helps.

Posted on Apr 05, 2011

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