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tomranoncearoundaringtrack,wgichis360meters.duringthefirsthalfofthewholetime,hisspeed... tom ran once around a ring track ,wgich is 360 meters .during the first half of the whole time ,his speed was 5 meters every second .during the second half ,his speed was 4meters every second .how many seconds did he spend on the second half of the whole way ? 展开
actonst
2013-01-19 · TA获得超过1.8万个赞
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distance of the second half: 360/2 = 180 (m)
time spent on the second half: 180 / 4 = 45 (s)
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啥意思
Sinosophy
2013-01-19 · TA获得超过3.3万个赞
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Tom is not tom, and that is not English!
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啥意思
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Tom should it be, not tom, and tom is not English.
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