根据等量关系列方程是我们解应用题的常用方法。但有的应用题中的数量关系是不等关系,怎样解这类应用题呢?我们可以仿照列方程的方法,根据题目中的不等关系列出不等式,再解这个不等式,便可获解。这类问题的特点,就是在表达数量关系时常出现“至少”、“至多”、“大于”、“小于”等词语。其解题程序可归纳为: Equivalent equations based on the equation are the common methods for solving our problems. However, some quantitative problems in applied problems are inequality. How can these problems be solved? We can follow the method of column equations to list inequalities based on inequality in the problem. Then solve the inequality and solve the problem. . The characteristic of this type of problem is that words such as “at least”, “at most”, “larger than ”, and “less than” appear frequently when expressing quantitative relationships. The problem solving procedure can be summarized as: