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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （100+x）/240-x/280 <0.6 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 100 + x ) / 240 - x / 280 <0.6         (1)

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    From inequality(1)：
         x < 308

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    The final solution set is :
         x < 308

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