a)
[tex]1$h \longrightarrow 3600$s\\0,3h \longrightarrow x$s\\\\$x = 0{,}3 \cdot 3600\\x = 1080[/tex]
Resposta: 0,3h = 1080s
b)
[tex]3600$s \rightarrow 1$h\\900s \longrightarrow x$h\\\\$3600x = 900\\x = 900:3600\\x = 0{,}25[/tex]
Resposta: 900s = 0,25h
Esoero ter ajudado!
