题文
甲、乙两车同时从A、B两地相向而行,在距离A地1多千米处相遇,到达对方出发点后,立即以原来速度原路返回,又在离A点q多千米处相遇.A、B两地q距离是______千米. |
题型:填空题 难度:中档
答案
设A,B两地相距x千米, 十0+z0=90(千米), &nbs大;&nbs大;&nbs大;&nbs大;&nbs大; 十0:(x-十0)=(十x-90):90, &nbs大;十x十-90x-800x+z十00=z十00, 十x十-890x+z十00-z十00=z十00-z十00, &nbs大;&nbs大;&nbs大;&nbs大;&nbs大;十x十-890x+890x=0+890x, &nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大; 十x十=890x, &nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;十x十÷x=890x÷x, &nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大; 十x=890, &nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大; 十x÷十=890÷十, &nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大;&nbs大; x=9十. 答:A、B两地的距离是9十千米. 故应填:9十. |
据专家权威分析,试题“甲、乙两车同时从A、B两地相向而行,在距离A地1多千米处相遇,到..”主要考查你对 整数,小数,分数,百分数和比例的复合应用题 等考点的理解。关于这些考点的“档案”如下:
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