Overview: 4 questions will be solved this time.Among them
           ☆4 inequalities

[ 1/4Inequality]
    Assignment:Find the solution set of inequality 0.3*100*1.9+0.7*x*2.02-100-x >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0.3 * 100 * 1.9 + 0.7 * x * 2.02 - 100 - x >0         (1)

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    From inequality(1)：
         x ＞ 103.864734

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    The final solution set is :
         x ＞ 103.864734
[ 2/4Inequality]
    Assignment:Find the solution set of inequality 0.4*100*1.9+0.6*x*2.02-100-x >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0.4 * 100 * 1.9 + 0.6 * x * 2.02 - 100 - x >0         (1)

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    From inequality(1)：
         x ＞ 113.207547

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    The final solution set is :
         x ＞ 113.207547
[ 3/4Inequality]
    Assignment:Find the solution set of inequality 0.5*100*1.9+0.5*x*2.02-100-x >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0.5 * 100 * 1.9 + 0.5 * x * 2.02 - 100 - x >0         (1)

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    From inequality(1)：
         x ＞ 500

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    The final solution set is :
         x ＞ 500
[ 4/4Inequality]
    Assignment:Find the solution set of inequality 0.6*100*1.9+0.4*x*2.02-100-x >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        0.6 * 100 * 1.9 + 0.4 * x * 2.02 - 100 - x >0         (1)

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    From inequality(1)：
         x < 72.916667

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    The final solution set is :
         x < 72.916667

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