Question 1062300
"When Bob was as old as Rob was when Bob was half as old as Rob was when Bob was as old as Rob is. Rob was just a third as old as Bob was when Rob was half as old as Bob is. One is in their teens. What are their present ages?"
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Not clear.
"When Bob was as old as Rob was - when Bob was half as old as Rob was - when Bob was as old as Rob is. --> contradictory.