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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 2400+90*(40*(1-x/100)-20)*(1-1/5) ≥1716 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        2400 + 90 * ( 40 * ( 1 - x / 100 ) - 20 ) * ( 1 - 1 / 5 ) ≥1716         (1)

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    From inequality(1)：
         x ≤ 295/4

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    The final solution set is :
         x ≤ 295/4

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