奥数题the extra time ,in minutes,that is would take to cover a distance of 120kmtravelling at an average speed of 60km/h instead of 72km/h would be-----------

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奥数题theextratime,inminutes,thatiswouldtaketocoveradistanceof120kmtravellingatanaveragespeedof60km/hin

奥数题the extra time ,in minutes,that is would take to cover a distance of 120kmtravelling at an average speed of 60km/h instead of 72km/h would be-----------
奥数题the extra time ,in minutes,that is would take to cover a distance of 120km
travelling at an average speed of 60km/h instead of 72km/h would be-----------

奥数题the extra time ,in minutes,that is would take to cover a distance of 120kmtravelling at an average speed of 60km/h instead of 72km/h would be-----------
100km

能用中文吗?我理解能力不好