[tex]1 \ h = 60 \ min\\\\1 \ min = 60 \ s\\\\1 \ doba = 24 \ h\\\\1 \ kwadrans = 15 \ min[/tex]
[tex]\dfrac{1}{2}\ h= \dfrac{1}{2}\cdot1 \ h= \dfrac{1}{2}\cdot60\ min= \dfrac{60}{2}\ min= \boxed{30 \ min}[/tex]
[tex]1\dfrac{1}{2} \ h=\dfrac{3}{2}\cdot1 \ h= \dfrac{3}{2}\cdot60\ min= \dfrac{180}{2}\ min=\boxed{90 \ min}[/tex]
[tex]\dfrac{1}{2}\ min= \dfrac{1}{2}\cdot1 \ min= \dfrac{1}{2}\cdot60\ s= \dfrac{60}{2}\ s= \boxed{30 \ s}[/tex]
[tex]2\dfrac{1}{4} \ min =\dfrac{9}{4} \cdot1\ min =\dfrac{9}{4} \cdot60\ s =\dfrac{540}{4} \ s =\boxed{135 \ s}[/tex]
[tex]\dfrac{1}{8} \ doby= \dfrac{1}{8} \cdot24 \ h= \dfrac{24}{8} \ h=\boxed{3 \ h}[/tex]
[tex]3\dfrac{1}{8} \ doby = \dfrac{25}{\not8}\cdot\not\!\!24\ ^{3}\ h= 25\cdot3 \ h = \boxed{75 \ h}[/tex]
[tex]\dfrac{1}{3} \ kwadransa = \dfrac{1}{3} \cdot15 \ min=\dfrac{15}{3} \ min = \boxed{5 \ min}[/tex]
[tex]3\dfrac{1}{3} \ kwadransa=\dfrac{10}{3}\cdot15 \ min= \dfrac{150}{3}\ min=\boxed{50 \ min}[/tex]
