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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （20+2.5×18+0.6×18+10.4×18.1+18.6×3.4+19.7t）×0.276-2×4.5×0.525+10×（16.9+t-1）×（1-0.276） <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 20 + 2.5 × 18 + 0.6 × 18 + 10.4 × 18.1 + 18.6 × 3.4 + 19.7 * t ) × 0.276 - 2 × 4.5 × 0.525 + 10 × ( 16.9 + t - 1 ) × ( 1 - 0.276 ) <0         (1)

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    From inequality(1)：
         t < -15.833171

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    The final solution set is :
         t < -15.833171

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