有些应用题,表面上看似乎缺少条件,难以找到解题的突破口。其实,只要我们深挖隐含条件,找出条件与条件、条件与问题间的特殊联系,就能使问题迎刃而解。例1 王老师带领五(3)班同学去种树,这些同学恰好平均分成5组。如果老师与同学每人种树的棵数相同,共种树1517棵,那么平均每人种树多少棵? Some application questions, on the surface seem to lack of conditions, it is difficult to find a breakthrough in solving problems. In fact, as long as we dig out implicit conditions and find out the special connection between conditions and conditions, conditions and problems, we can solve the problem. Example 1 Wang led five (3) classmates to grow trees, and these students split into exactly five groups. If the teacher and classmate each tree planted the same number of trees, a total of 1517 trees, then how many trees per tree?