在二零零八年春运期间,我国南方出现大范围冰雪灾害,导致某地电路断电,该地供电局组织电工进行抢修,供电局距离抢修工地十五千

ghikghckghchgc62022-10-04 11:39:542条回答

在二零零八年春运期间,我国南方出现大范围冰雪灾害,导致某地电路断电,该地供电局组织电工进行抢修,供电局距离抢修工地十五千米,抢修车装载着所需材料先从供电局出发,十五分钟后,电工乘吉普车从同一地点出发,结果他们同时到达抢修工地,已知吉普车速度是抢修车速度的一点五倍,求这两种车的速度?

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铁血男孩 共回答了12个问题 | 采纳率91.7%
路程一定,速度和时间成反比,吉普车速度是抢修车速度的1.5倍,那么抢修车的时间一定是吉普车的1.5倍,吉普车的时间为:15÷(1.5-1)=30(分钟)=0.5(小时),速度:15÷0.5=30(千米/每小时).抢修车的时间为:30+15=45(分钟)=0.75(小时).速度:15÷0.75=20(千米/每小时)
1年前
白魔115 共回答了2个问题 | 采纳率
(15/x-15/60)*1.5x=15
解得;x=20
20*1.5=30
抢:20.吉;30
1年前

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