雪山隧道全長約13公里,崇人開車以每小時70到90公里的速度通過此隧道,則下列何者可能是該車通過的時間? (A)8� - 開車
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By Joe
at 2017-06-15T12:40
at 2017-06-15T12:40
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開車
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By Una
at 2017-06-19T13:35
at 2017-06-19T13:35
(1) 時速70公里
t1=13km/(70km/h)
=(13/70)h
=(13/70)*60min
=11.14min
(2) 時速80公里
t2=13km/(80km/h)
=(13/80)h
=(13/80)*60min
==9.75min
So
11.14>=t>=9.75
(B)
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By Elvira
at 2017-06-18T13:53
at 2017-06-18T13:53
通過時間=13/70小時=13/70*60分鐘=11.1分鐘
若以每小時90公里行駛,
通過時間=13/90小時=13/90*60分鐘=8.67分鐘
則8.67<通過時間<11.1
因此答案是B
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