Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (((10*t+77.81)/(7.8+t))*(2*(t-4.09)+0.8*10.89))/(11.89*10) ≥1.6 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( ( ( 10 * t + 77.81 ) / ( 7.8 + t ) ) * ( 2 * ( t - 4.09 ) + 0.8 * 10.89 ) ) / ( 11.89 * 10 ) ≥1.6         (1)
        From the definition field of divisor
         7.8 + x ≠ 0        (2 )

---

    From inequality(1)：
         t ≥ 9.256608
    From inequality(2)：
         t < -39/5 或  t ＞ -39/5

---

    From inequalities (1) and (2)
         t ≥ 9.256608    (3)

---

    The final solution set is :
         t ≥ 9.256608

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