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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 400*6a+320*4a >1840000 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        400 * 6 * a + 320 * 4 * a >1840000         (1)

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    From inequality(1)：
         a ＞ 500

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    The final solution set is :
         a ＞ 500

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