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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (2000-50n)/√（6.25n） >= 1.65 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 2000 - 50 * n ) / √ ( 6.25 * n ) >= 1.65         (1)
        From the definition field of √
         6.25 * x ≥ 0        (2 )

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    From inequality(1)：
         0 ≤ n ≤ 39.481616
    From inequality(2)：
         n ≥ 0

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    From inequalities (1) and (2)
         0 ≤ n ≤ 39.481616    (3)

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    The final solution set is :
         0 ≤ n ≤ 39.481616

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