a)
[tex]40 - 100\% \\ x - 1\% \\ \\ x = \frac{40 \times 1}{100} = 0.40[/tex]
b)
[tex]180 - 100\% \\ x - 10\% \\ \\ x = \frac{180 \times 10}{100} = \frac{180 \times 1}{10} = 18[/tex]
c)
[tex]60 - 100\% \\ x - 5\% \\ \\ x = \frac{60 \times 5}{100} = \frac{3 \times 5}{5} = 3[/tex]
d)
[tex]500 - 100\% \\ x - 23\% \\ \\ x = \frac{500 \times 23}{100} = \frac{5 \times 23}{1} = 115[/tex]
e)
[tex]20 - 100\% \\x - 12\% \\ \\ x = \frac{20 \times 12}{100} = \frac{1 \times 12}{5} = \frac{12}{5} = 2 \frac{2}{5}[/tex]
f)
[tex]102 - 100\% \\ x - 3\% \\ \\ x = \frac{102 \times 3}{100} = \frac{51 \times 3}{50} = \frac{153}{50} = 3 \frac{3}{50} [/tex]
Myślę że pomogłem ;)
