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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 300*0.8y+200[30*1+(20-1)*1-y] <= 10800 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        300 * 0.8 * y + 200 * ( 30 * 1 + ( 20 - 1 ) * 1 - y ) <= 10800         (1)

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    From inequality(1)：
         y ≤ 25

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    The final solution set is :
         y ≤ 25

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