each hiker received
[tex]\frac{4}{6}=\frac{2}{3}\approx0.666[/tex]we need the mixed mode of the number on lbs between the 6 hikers
[tex]\frac{4\frac{1}{2}}{6}[/tex]convert the mixed number in a fraction
[tex]4\frac{1}{2}\longrightarrow\frac{(2\times4)+1}{2}=\frac{9}{2}[/tex]so
[tex]\begin{gathered} \frac{\frac{9}{2}}{6} \\ \\ \frac{9}{2\times6} \\ =\frac{3}{4}=0.75lb \end{gathered}[/tex]