a)
[tex]150 - 100\% \\ 15 - x \\ \\ x = \frac{15 \times 100}{150} = \frac{1 \times 100}{10} = 10\%[/tex]
Prawda
b)
[tex]20 - 100\% \\ 4 - x \\ \\ x = \frac{4 \times 100}{20} = \frac{1 \times 100}{5} = 20\%[/tex]
Fałsz
c)
[tex]60 - 100\% \\ 90 - x \\ \\ x = \frac{90 \times100}{60} = \frac{9000}{60} = 150\%[/tex]
Prawda
d)
[tex]12.5 - 100\% \\ x - 50\% \\ \\ x = \frac{12.5 \times 50}{100} = \frac{12.5 \times 1}{2} = 6.25km[/tex]
[tex]6.25km > 6km[/tex]
Prawda
