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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 20000/x+30000/(x+60) ≤250 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        20000 / x + 30000 / ( x + 60 ) ≤250         (1)
        From the definition field of divisor
        x ≠ 0        (2 )
        From the definition field of divisor
         x + 60 ≠ 0        (3 )

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    From inequality(1)：
         x ≤ -60 或  -28.488578 ≤ x ≤ 0 或  x ≥ 168.488578
    From inequality(2)：
         x < 0 或  x ＞ 0
    From inequality(3)：
         x < -60 或  x ＞ -60

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    From inequalities (1) and (2)
         x ≤ -60 或  -28.488578 ≤ x < 0 或  x ≥ 168.488578    (4)
    From inequalities (3) and (4)
         x < -60 或  -28.488578 ≤ x < 0 或  x ≥ 168.488578    (5)

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    The final solution set is :
         x < -60 或  -28.488578 ≤ x < 0 或  x ≥ 168.488578

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