Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 150 >= 50t .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        150 >= 50 * t         (1)

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    From inequality(1)：
         t ≤ 3

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    The final solution set is :
         t ≤ 3
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 150 <= 60t .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        150 <= 60 * t         (1)

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    From inequality(1)：
         t ≥ 5/2

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    The final solution set is :
         t ≥ 5/2

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