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

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 200x+150(20-x)小于等于3550 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        200 * x + 150 * ( 20 - x ) ≤3550         (1)

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    From inequality(1)：
         x ≤ 11

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    The final solution set is :
         x ≤ 11
[ 2/2Inequality]
    Assignment:Find the solution set of inequality x大于2/3(20-x) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x >2 / 3 * ( 20 - x )         (1)

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    From inequality(1)：
         x ＞ 8

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    The final solution set is :
         x ＞ 8

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