列方程解相遇问题 求求另一速度另一速度的应用题的应用题淮安市阳光国际学校五年级淮安市阳光国际学校五年级 胡胡 建建Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.复习题目复习题目: :v在宁沪高速公路上，两辆汽车 分别从上海和南京同时相对开 出。从上海开出的汽车，平均 每小时行118.4千米。从南京开 出的汽车，平均每小时行110千 米。经过1.2小时，两车相遇。 宁沪高速公路全长多少千米？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.例题例题 4 4：v宁沪高速公路全长274.8千米。 两辆汽车分别从上海和南京同时 相对开出，经过1.2小时相遇。 从上海开出的汽车，平均每小时 行118.4千米。从南京开出的汽 车，平均每小时行多少千米？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.练一练：练一练：v学校买13盒白粉笔和10盒 彩色粉笔，共付64.5元。 每盒白粉笔2.5元，每盒彩 色粉笔多少元？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.v周永和李刚两家相距600 米，他们同时从自己家出发 ，相对走来，经过4分钟相 遇。周永每分钟走72米， 李刚每分钟走多少米？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.v甲、乙两辆汽车同时同地 向背而行，2.4小时后两车 相距192千米。甲汽车每小 时行42千米，乙汽车每小 时行多少千米？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.v两个工程队共同开凿一条 152米长的隧道，各从一端 相向施工，16天打通。甲 队每天开凿4.5米，乙队每 天开凿多少米？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.课堂作业：课堂作业：v练习二十二 第7、8、9题Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.