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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (30十40(10一x)0.6 ) ≤200 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 30 + 40 * ( 10 - x ) * 0.6 ) ≤200         (1)

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    From inequality(1)：
         x ≥ 2.916667

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    The final solution set is :
         x ≥ 2.916667

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