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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 16（1－x）1500（1＋30％）＋20（1－x）1000（1＋20％） ≥43680 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        16 * ( 1 - x ) * 1500 * ( 1 + 30 % ) + 20 * ( 1 - x ) * 1000 * ( 1 + 20 % ) ≥43680         (1)

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    From inequality(1)：
         x ≤ 0.208696

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    The final solution set is :
         x ≤ 0.208696

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