Obliczenia
[tex]1 \ h=60 \ min\\\\60 \ min\Rightarrow51 \ km\\\\1 \ min\Rightarrow x \ km\\\\60\cdot x=51\cdot1\\\\60x=51 \ \ /:60\\\\x=\frac{51}{60}=\frac{17}{20}=\frac{85}{100}=0,85 \ km\\\\0,85 \ km=0,85\cdot1000 \ m=850 \ m\\\\\huge\boxed{V=850 \ \frac{m}{min}}[/tex]
