Answer:
[tex]V_{wf}=31liters[/tex]
Step-by-step explanation:
From the question we are told that:
Total hike [tex]n=2100[/tex]
Drink per hour [tex]V_h=1.5 litter[/tex]
Velocity for 3 days [tex]S=2mph[/tex]
Distance after 3 days [tex]d_3=44miles[/tex]
Initial water volume [tex]V_1=2litters[/tex]
Generally the equation for hours traveled in 3 days is mathematically given by
[tex]T_3=\frac{Distance after 3 days}{Velocity for 3 days }[/tex]
[tex]T_3=\frac{d_3}{S}[/tex]
[tex]T_3=\frac{44}{2}[/tex]
[tex]T_3=22h[/tex]
Generally the equation for Total water drank for first 3 days is mathematically given by
[tex]V_w=V_h*T_3[/tex]
[tex]V_w=22*1.5[/tex]
[tex]V_w=33liters[/tex]
Therefore water need to be filtered at stream i.e water apart from 2 liters carried
[tex]V_{wf}=33-2[/tex]
[tex]V_{wf}=31liters[/tex]