Answer :
[tex]\begin{gathered} x=\text{hours spend in bed} \\ y=\text{hours of the day=24} \end{gathered}[/tex]
a)
[tex]\begin{gathered} x=8 \\ \frac{8}{24}=\frac{1}{3} \end{gathered}[/tex]b)
[tex]\frac{9}{24}=\frac{3}{8}[/tex]c)
[tex]\frac{10}{24}=\frac{5}{12}[/tex]