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           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （450－50）y＋50×0.4y ≥（12000＋30000）×（1+0.25） .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 450 - 50 ) * y + 50 × 0.4 * y ≥ ( 12000 + 30000 ) × ( 1 + 0.25 )         (1)

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    From inequality(1)：
         y ≥ 125

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    The final solution set is :
         y ≥ 125

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