Respuesta :
well, the difference of it is 72 - 45 = 27,
if we take 72 to be the 100%, what is 27 off of it in percentage?
[tex]\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 72&100\\ 27&x \end{array}\implies \cfrac{72}{27}=\cfrac{100}{x}\implies \cfrac{8}{3}=\cfrac{100}{x}\implies 8x=300 \\\\\\ x= \cfrac{300}{8}\implies x = \cfrac{75}{2}\implies x = 37.5[/tex]
Answer: The required percent decrease in the price is 37.5%.
Step-by-step explanation: Given that a dress that normally sells for $72 is on sale for $45.
We are to find the percent decrease in the price.
The decrease in the price of the dress is given by
[tex]d_p=72-45=27.[/tex]
Therefore, the percent decrease in the price is
[tex]p\\\\\\=\dfrac{d_p}{72}\times100\%\\\\\\=\dfrac{27}{72}\times100\%\\\\\\=0.375\times100\%\\\\=37.5\%.[/tex]
Thus, the required percent decrease in the price is 37.5%.
