Question
John and Albert started running a 10-km cross-country race together at a speed of 6 km/h and 12 km/h respectively. At the halfway mark, Albert took a rest until John caught up with him. How long did Albert rest? Express your answer in min.
3 m

Click button first when a symbol is required. X

John and Albert started running a 10-km cross-country race together at a speed of 6 km/h and 12 km/h respectively. At the halfway mark, Albert took a rest until John caught up with him. How long did Albert rest? Express your answer in min.