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阅读《中小学数学》(小学版)2012年第12期刊登的《对一道小学数学教师招聘试题的探索》一文后,对作者就一道题的解答进行的探索研究很是赞赏。但仔细推敲还是有思路不够简捷、解答过于复杂之嫌,有必要作进一步探讨。原题:A、B两地相距20千米,有45人的团队从A地到B地,该团队雇一辆限乘9人的马车,其速度是该团队步行速度的6倍,马车与团队同时从A地出发到B地,马车到达B地后,立即回头继续接团队余下的人员,就这样往返于团队和B地之间,当团队的所有人员都(运)到B地时,马车共行了多少千米?首先明确几点。虽然题中没有明确指出,但我觉得还应该补充强调一点,就是团队人员上下马车的时间忽略不计。不然,如果上下马车的时间内,团队其
Read the “primary and secondary mathematics” (Primary Edition) published in 2012 No. 12, “a primary school mathematics teacher recruitment test,” a text, the author on the answer to a question of exploration and study is very appreciated. However, careful scrutiny or thinking is not enough simple, too complicated to answer the question, it is necessary for further discussion. The original title: A, B 20 km apart, a 45-person team from A to B, the team hired a carriage limited to 9 people, the speed of the team walking speed of 6 times the carriage and The team at the same time starting from A to B, carriage arrived at B, immediately continue to pick the team remaining staff, so back and forth between the team and B, when all the team members (B) to B, How many kilometers of the wagon? First of all, make it clear. Although the problem is not clearly pointed out, but I think it should be added that one point is that team members up and down the car negligible time. Otherwise, if the team is up and down within the time of carriage