甲乙丙三人直行,乙在甲前400米,丙在乙前400米,甲乙丙的速度为120米、100米和90米(1)若乙、丙同时而行,经过多少分钟乙、丙两人相遇?(2)若甲、乙、丙三人同时而行,经过多少分钟甲在乙的前
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 16:36:06
![甲乙丙三人直行,乙在甲前400米,丙在乙前400米,甲乙丙的速度为120米、100米和90米(1)若乙、丙同时而行,经过多少分钟乙、丙两人相遇?(2)若甲、乙、丙三人同时而行,经过多少分钟甲在乙的前](/uploads/image/z/824148-36-8.jpg?t=%E7%94%B2%E4%B9%99%E4%B8%99%E4%B8%89%E4%BA%BA%E7%9B%B4%E8%A1%8C%2C%E4%B9%99%E5%9C%A8%E7%94%B2%E5%89%8D400%E7%B1%B3%2C%E4%B8%99%E5%9C%A8%E4%B9%99%E5%89%8D400%E7%B1%B3%2C%E7%94%B2%E4%B9%99%E4%B8%99%E7%9A%84%E9%80%9F%E5%BA%A6%E4%B8%BA120%E7%B1%B3%E3%80%81100%E7%B1%B3%E5%92%8C90%E7%B1%B3%EF%BC%881%29%E8%8B%A5%E4%B9%99%E3%80%81%E4%B8%99%E5%90%8C%E6%97%B6%E8%80%8C%E8%A1%8C%2C%E7%BB%8F%E8%BF%87%E5%A4%9A%E5%B0%91%E5%88%86%E9%92%9F%E4%B9%99%E3%80%81%E4%B8%99%E4%B8%A4%E4%BA%BA%E7%9B%B8%E9%81%87%3F%282%EF%BC%89%E8%8B%A5%E7%94%B2%E3%80%81%E4%B9%99%E3%80%81%E4%B8%99%E4%B8%89%E4%BA%BA%E5%90%8C%E6%97%B6%E8%80%8C%E8%A1%8C%2C%E7%BB%8F%E8%BF%87%E5%A4%9A%E5%B0%91%E5%88%86%E9%92%9F%E7%94%B2%E5%9C%A8%E4%B9%99%E7%9A%84%E5%89%8D)
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