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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1000 <0.3X <2000 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        1000 <0.3 * x         (1)
        0.3 * x <2000         (2)

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    From inequality(1)：
         x ＞ 10000/3
    From inequality(2)：
         x < 20000/3

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    From inequalities (1) and (2)
         10000/3 < x < 20000/3     (3)

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    The final solution set is :
         10000/3 < x < 20000/3

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