[tex]5kg - 100\% \\ x - 4\% \\ \\ x = \frac{5 \times 4}{100} = \frac{20}{100} = 0.2kg - sol[/tex]
[tex]5kg - 100\% \\ x - 5\% \\ \\ x = \frac{5 \times 5}{100} = \frac{25}{100} = 0.25kg[/tex]
Ile należy dodać
[tex]0.25 - 0.2 = 0.05kg[/tex]
[tex]0.05kg = 50g[/tex]
