Obliczenia
[tex]1,25=1\frac{25}{100}=1\frac{1}{4}\\\\1 \ min=60 \ s\\\\1,25 \ min=1\frac{1}{4}\cdot60 \ s=\frac{5}{4}\cdot60 \ s=5\cdot15 \ s=\boxed{75 \ s}[/tex]
Odp. 1,25 min to 75 sekund.
[tex]1~min=60~s\\\\0,25=\dfrac{25}{100} =\dfrac{1}{4} \\\\1,25~min =1\dfrac{1}{4} ~min=\dfrac{5}{4} ~min=\dfrac{5}{4} \cdot 60 ~s=\dfrac{5}{4} \cdot \dfrac{60}{1} ~s=\dfrac{300}{4} ~s=75~s\\\\\\Odp:~~1,25~min =75~s[/tex]
