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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -(30-25)*x+(60-45)*(120-x) ≤((25*x+45*(1200-x))*0.3 ) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -( 30 - 25 ) * x + ( 60 - 45 ) * ( 120 - x ) ≤ ( ( 25 * x + 45 * ( 1200 - x ) ) * 0.3 )         (1)

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    From inequality(1)：
         x ≥ -1028.571429

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    The final solution set is :
         x ≥ -1028.571429

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