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

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 12a+10（8-a） ≤89 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        12 * a + 10 * ( 8 - a ) ≤89         (1)

---

    From inequality(1)：
         a ≤ 9/2

---

    The final solution set is :
         a ≤ 9/2
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 200a+160（8-a） ≥1380 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        200 * a + 160 * ( 8 - a ) ≥1380         (1)

---

    From inequality(1)：
         a ≥ 5/2

---

    The final solution set is :
         a ≥ 5/2

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