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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 10.9 <0.78*0.8y <32.7 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        10.9 <0.78 * 0.8 * y         (1)
        0.78 * 0.8 * y <32.7         (2)

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    From inequality(1)：
         y ＞ 17.467949
    From inequality(2)：
         y < 52.403846

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    From inequalities (1) and (2)
         17.467949 < y < 52.403846     (3)

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    The final solution set is :
         17.467949 < y < 52.403846

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