Answer :
Given :
Grade , G = 0 % .
[tex]VO_2=52\ L/min[/tex] .
Weight , W = 65 kg .
To Find :
Speed in m/min.
Solution :
[tex]VO_2[/tex] is given by :
[tex]VO_2=3.5+[v( in \ m/min)\times 0.2]+(Grade\times v \times 0.9 )\\\\52=3.5+(v\times 0.2)+0\\ \\v=\dfrac{52-3.5}{0.2}\ m/min\\\\v=242.5\ m/min[/tex]
Therefore , the speed is 242.5 m/min .
Hence , this is the required solution .