a) Since
[tex]\frac{2}{4}=\frac{1}{x}=\frac{4}{y}=\frac{50}{z}[/tex]
Then,
[tex]\begin{gathered} \Rightarrow\frac{2}{4}=\frac{1}{x}\Rightarrow x=\frac{4}{2}\Rightarrow x=2 \\ \Rightarrow\frac{2}{4}=\frac{4}{y}\Rightarrow y=4\cdot\frac{4}{2}=8\Rightarrow y=8 \\ \Rightarrow\frac{2}{4}=\frac{50}{z}\Rightarrow z=50\cdot\frac{4}{2}\Rightarrow z=100 \end{gathered}[/tex]
Thus, the answers to part a) are x=2, y=8, and z=100
b) Notice that 2/4=1/2=0.5, and 0.5=50%; therefore, 2/4 is equal to 50%.
c)
