二人相聚45km甲7km/h已3km/h两人同时出发同向而行甲追上乙需几小时?相向而行甲乙需几小时相遇?同向而行已先走1h,甲再经几小时能追上乙?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/12 09:05:52
![二人相聚45km甲7km/h已3km/h两人同时出发同向而行甲追上乙需几小时?相向而行甲乙需几小时相遇?同向而行已先走1h,甲再经几小时能追上乙?](/uploads/image/z/6224837-5-7.jpg?t=%E4%BA%8C%E4%BA%BA%E7%9B%B8%E8%81%9A45km%E7%94%B27km%2Fh%E5%B7%B23km%2Fh%E4%B8%A4%E4%BA%BA%E5%90%8C%E6%97%B6%E5%87%BA%E5%8F%91%E5%90%8C%E5%90%91%E8%80%8C%E8%A1%8C%E7%94%B2%E8%BF%BD%E4%B8%8A%E4%B9%99%E9%9C%80%E5%87%A0%E5%B0%8F%E6%97%B6%3F%E7%9B%B8%E5%90%91%E8%80%8C%E8%A1%8C%E7%94%B2%E4%B9%99%E9%9C%80%E5%87%A0%E5%B0%8F%E6%97%B6%E7%9B%B8%E9%81%87%3F%E5%90%8C%E5%90%91%E8%80%8C%E8%A1%8C%E5%B7%B2%E5%85%88%E8%B5%B01h%2C%E7%94%B2%E5%86%8D%E7%BB%8F%E5%87%A0%E5%B0%8F%E6%97%B6%E8%83%BD%E8%BF%BD%E4%B8%8A%E4%B9%99%3F)
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二人相聚45km甲7km/h已3km/h两人同时出发同向而行甲追上乙需几小时?相向而行甲乙需几小时相遇?同向而行已先走1h,甲再经几小时能追上乙?
二人相聚45km甲7km/h已3km/h两人同时出发同向而行甲追上乙需几小时?相向而行甲乙需几小时相遇?
同向而行已先走1h,甲再经几小时能追上乙?
二人相聚45km甲7km/h已3km/h两人同时出发同向而行甲追上乙需几小时?相向而行甲乙需几小时相遇?同向而行已先走1h,甲再经几小时能追上乙?
45/(7-3)=11.25小时
45/(7+3)=4.5小时
(45+3)/(7-3)=12小时