Solveit

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1-65/80 = 0.1875

Answer: decresed by 18.75 %

71    

Thank you Melody ! :)

2                      

(43/25)*100 = 172 %

http://www.cymath.com/answer.php?q=2t^2-25t-250

\(75^2=70\times80+5^2=5625\)