标题: 问一下数学og12ds14题的条件一，读了半天还是没弄明白 [打印本页] 作者: sunny20111126 时间: 2012-4-17 21:09 标题: 问一下数学og12ds14题的条件一，读了半天还是没弄明白 条件（1）Car X drove onto the bridge exactly 3 seconds after Car Y drove onto the bridge and drove off the bridge 2 seconds after Car Y drove off the bridge. OG解释说Car X took 1 second less to cross the bridge than Car Y.实在是没看出来啊，求大家帮忙解释一下下下下下下，快考了哎作者: sunny20111126 时间: 2012-4-17 21:21
是不是X应该比Y晚下桥3秒，但是现在比Y晚下桥2秒，所以X在桥上比Y少用1秒？ 木有拐过来......
