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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality a*(1000-20*(a-25)) <700 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         a * ( 1000 - 20 * ( a - 25 ) ) <700         (1)

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    From inequality(1)：
         a < 0.469607 或  a ＞ 74.530393

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    The final solution set is :
         a < 0.469607 或  a ＞ 74.530393

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