1.
100% + 20% = 120%
120% · 28 = 1,2 · 28 = 33,6
2.
105 : 35% = 105 : 35/100 = 105 : 7/20 = 105 · 20/7 = 15 · 20 = 300
3.
[tex]\frac{y}{x} \cdot100\% = \frac{5}{20}\cdot100\% =0,25\cdot100\% = \underline{25\%}[/tex]
4.
24,1 = 24,1 · 100% = 2 410%
5.
[tex]33\frac{1}{3}\% = \frac{100}{3}:100 = \frac{100}{3}\cdot\frac{1}{100} = \underline{\frac{1}{3}}[/tex]
