Question
George and Zeph started running a 14-km cross-country race together at a speed of 12 km/h and 15 km/h respectively. At the halfway mark, Zeph took a rest until George caught up with him. How long did Zeph rest? Express your answer in min.
3 m

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George and Zeph started running a 14-km cross-country race together at a speed of 12 km/h and 15 km/h respectively. At the halfway mark, Zeph took a rest until George caught up with him. How long did Zeph rest? Express your answer in min.