At $$6.10$$ pm, both Simon and his wife left their offices and drove along the same direction back home. Simon, whose office was further away from home, drove at an average speed of $$80 \text {km/h}$$. His wife drove at an average speed of $$60 \text {km/h}$$. The distance between Simon\textquotesingle s office and his wife\textquotesingle s office was $$15 \text{km}$$. At what time did Simon overtake his wife? 
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