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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1.5*x+0.9*((6000-80*x)/40) <120 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1.5 * x + 0.9 * ( ( 6000 - 80 * x ) / 40 ) <120         (1)

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    From inequality(1)：
         x ＞ 50

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    The final solution set is :
         x ＞ 50

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