Odpowiedź:
zad. 3
[tex]2 {m}^{2} = 0.5 \: l \\ x = 3l \\ 6 = 0.5x \\ x = 12 {m}^{2} [/tex]
zad. 4
[tex]0.5 \: kg = 12 \\ x = 30 \\ 15 = 12x \\ x = \frac{15}{12} = 1.25kg[/tex]
zad. 5
[tex]8cm = 3kg \\ 108cm = x \\ 324 = 8x \\ x = 40.5 \: kg[/tex]
zad. 6
[tex]150km \: = 150000m = 15000000cm \\ \\ 1cm \: = 500000 cm \: \\ x = 15000000 cm\\ 15000000 = 500000x \\ 150 = 5x \\ x = 30cm[/tex]
zad. 7
[tex]100g = 3.8g \\ 340g = x \\ 100x = 1292 \\ x = 12.92g[/tex]
