Odpowiedź:
6.
100% --- x
40 % --- 22
[tex]x = \frac{100 * 22}{40} = 10* 5,5 = 55 [zl] \\\\55 - 22 = 33 [zl][/tex]
7.
19 + 6 = 25 --> 100%
6 --- x
25 --- 100%
[tex]x = \frac{6*100}{25} = 24[/tex] [%]
8.
[tex]\frac{21}{25} * 100%[/tex] = 84%
21 --- 84%
25 --- 100%
100% - 84% = 16%