Mathematics: Pls find the percent of decrease from 300 to 250. round to the nearest tenth of a percent if necessary. 120% 0.2% 20% 16.7%

Pls find the percent of decrease from 300 to 250. - id3002501735595, lylesparks2791

Ответ:

MarishaTucker

30.12.2021

from 300 to 250 is well, just a change of 50 units.

if we take the 300 as the 100%, what is 50 off of it as percentage?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 300&100\\ 50&x \end{array}\implies \cfrac{300}{50}=\cfrac{100}{x}\implies 6=\cfrac{100}{x}\implies 6x=100 \\\\\\ x=\cfrac{100}{6}\implies x=\cfrac{50}{3}\implies x=16.666666\overline{6}\implies \stackrel{\textit{rounded up}}{x = 16.7}$