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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 27x*(50-x)+40x ≤1500 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        27 * x * ( 50 - x ) + 40 * x ≤1500         (1)

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    From inequality(1)：
         x ≤ 1.102758 或  x ≥ 50.378723

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    The final solution set is :
         x ≤ 1.102758 或  x ≥ 50.378723

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