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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 4.14%x+4.14%(2000-x)(1-5%) ≥81 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        4.14 % * x + 4.14 % * ( 2000 - x ) * ( 1 - 5 % ) ≥81         (1)

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    From inequality(1)：
         x ≥ 1130.434783

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    The final solution set is :
         x ≥ 1130.434783

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