英语类 英数题(意思)Acar is going from Beijing to Tianjin.lt covers 75 kilometersin 2.5 hours.Then the distance is 45 kilometers to Tianjin.Accordingto this calculation,how many hours does it need to go to Tianjin from Beijing?

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英语类 英数题(意思)Acar is going from Beijing to Tianjin.lt covers 75 kilometersin 2.5 hours.Then the distance is 45 kilometers to Tianjin.Accordingto this calculation,how many hours does it need to go to Tianjin from Beijing?
英语类 英数题(意思)
Acar is going from Beijing to Tianjin.lt covers 75 kilometersin 2.5 hours.Then the distance is 45 kilometers to Tianjin.Accordingto this calculation,how many hours does it need to go to Tianjin from Beijing?

英语类 英数题(意思)Acar is going from Beijing to Tianjin.lt covers 75 kilometersin 2.5 hours.Then the distance is 45 kilometers to Tianjin.Accordingto this calculation,how many hours does it need to go to Tianjin from Beijing?
2.5小时跑了75公里,还剩45公里到天津.
速度为75/2.5=30公里每小时.
总耗时为(75+45)/30=4小时

45/75*2.5=1.5

一辆小轿车从北京开往天津。它行驶75千米需要2.5小时,然后到天津的路程是45千米。依照这个计算,它从北京开往天津需要多少小时?
(我翻译尽量贴近数学的语言,应该这句话大意就是这样了。)

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