Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality a <40-a .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         a <40 - a         (1)

---

    From inequality(1)：
         a < 20

---

    The final solution set is :
         a < 20
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 2000a+3000(40-a) ≤102000 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        2000 * a + 3000 * ( 40 - a ) ≤102000         (1)

---

    From inequality(1)：
         a ≥ 18

---

    The final solution set is :
         a ≥ 18

Your problem has not been solved here? Please take a look at the  hot problems ！