thank youa、b相距540km,甲乙往返于a、b之间,到达对方出发地立即返回,乙比甲快,两车同时从a出发后第一次和第二次相遇都在途中p地,那么,当两车第三次相遇时,乙共行多少千米?
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![thank youa、b相距540km,甲乙往返于a、b之间,到达对方出发地立即返回,乙比甲快,两车同时从a出发后第一次和第二次相遇都在途中p地,那么,当两车第三次相遇时,乙共行多少千米?](/uploads/image/z/2611664-8-4.jpg?t=thank+youa%E3%80%81b%E7%9B%B8%E8%B7%9D540km%2C%E7%94%B2%E4%B9%99%E5%BE%80%E8%BF%94%E4%BA%8Ea%E3%80%81b%E4%B9%8B%E9%97%B4%2C%E5%88%B0%E8%BE%BE%E5%AF%B9%E6%96%B9%E5%87%BA%E5%8F%91%E5%9C%B0%E7%AB%8B%E5%8D%B3%E8%BF%94%E5%9B%9E%2C%E4%B9%99%E6%AF%94%E7%94%B2%E5%BF%AB%2C%E4%B8%A4%E8%BD%A6%E5%90%8C%E6%97%B6%E4%BB%8Ea%E5%87%BA%E5%8F%91%E5%90%8E%E7%AC%AC%E4%B8%80%E6%AC%A1%E5%92%8C%E7%AC%AC%E4%BA%8C%E6%AC%A1%E7%9B%B8%E9%81%87%E9%83%BD%E5%9C%A8%E9%80%94%E4%B8%ADp%E5%9C%B0%2C%E9%82%A3%E4%B9%88%2C%E5%BD%93%E4%B8%A4%E8%BD%A6%E7%AC%AC%E4%B8%89%E6%AC%A1%E7%9B%B8%E9%81%87%E6%97%B6%2C%E4%B9%99%E5%85%B1%E8%A1%8C%E5%A4%9A%E5%B0%91%E5%8D%83%E7%B1%B3%3F)
thank youa、b相距540km,甲乙往返于a、b之间,到达对方出发地立即返回,乙比甲快,两车同时从a出发后第一次和第二次相遇都在途中p地,那么,当两车第三次相遇时,乙共行多少千米?
thank you
a、b相距540km,甲乙往返于a、b之间,到达对方出发地立即返回,乙比甲快,两车同时从a出发后第一次和第二次相遇都在途中p地,那么,当两车第三次相遇时,乙共行多少千米?
thank youa、b相距540km,甲乙往返于a、b之间,到达对方出发地立即返回,乙比甲快,两车同时从a出发后第一次和第二次相遇都在途中p地,那么,当两车第三次相遇时,乙共行多少千米?
从出发到第一次相遇时,甲乙两辆汽车行驶的路程之和是两个单程,时间为2份,乙车行驶了1个单程+bp段
从出发到第二次相遇时,甲乙两辆汽车行驶的路程之和是四个单程,时间为4份,乙车行驶了2个单程+ap段
2个单程+ap段=(1个单程+bp段)*4/2=2个单程+bp段*2
则ap段=bp段*2
ap段:bp段=2:1
bp段=540×1/(1+2)=180千米
从出发到第三次相遇,两辆汽车共行驶了6个单程,
乙车共行驶了 (1个单程+bp段)*6/2=(540+180)*3=2160千米
thank youa、b相距540km,甲乙往返于a、b之间,到达对方出发地立即返回,乙比甲快,两车同时从a出发后第一次和第二次相遇都在途中p地,那么,当两车第三次相遇时,乙共行多少千米?
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