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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 80+0.95*(x-80) ≥120+0.9*(x-120) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        80 + 0.95 * ( x - 80 ) ≥120 + 0.9 * ( x - 120 )         (1)

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    From inequality(1)：
         x ≥ 160

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    The final solution set is :
         x ≥ 160

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