Question

va rog enorm de mult dau coroana​

Answer 1

a)

$\it p\%\ din\ 40=25 \Rightarrow \dfrac{p}{100}\cdot40=25 \Rightarrow p\cdot\dfrac{\ 40^{(20}}{100}=25 \Rightarrow p\cdot\dfrac{2}{5}=25|_{\cdot5} \Rightarrow \\ \\ \\ \Rightarrow p\cdot2=125|_{:2} \Rightarrow p=62,5\\ \\ \\ Deci,\ \ 25\ \ reprezint\breve a\ \ 62,5\%\ \ din\ \ 40$

b)

$\it 25\%\ \ din\ \ x\ =\ 60 \Rightarrow \dfrac{\ 25^{(25}}{100}\cdot x=60 \Rightarrow \dfrac{1}{4}\cdot x=60|_{\cdot4} \Rightarrow x=240$