1、修一条公路，已修了全长的1/3又15千米，这时已修的长度和剩下的长度比是4：7，这条公路长多少米？（列式计算） 2、甲乙两人共同生产一批零件，甲单独做要15天完成，乙单独做要12天完成。已知甲每天比乙少做40个，甲每天做多少个？（列式计算） 请各位飞碟哥哥姐姐们帮帮忙哒~~~ 

呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~呵呵~~~~