Question
Mark and Tom 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, Tom took a rest until Mark caught up with him. How long did Tom rest? Express your answer in min.
3 m

Click button first when a symbol is required. X

Mark and Tom 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, Tom took a rest until Mark caught up with him. How long did Tom rest? Express your answer in min.