I thought platoon adjusted PED LOS was to be found by calculating the Average Spacing and then looked up in HCM table.
This was my logic on the question:
Vp = 1200/(15*6.5) = 12.3
Assume Sp = 300 ft/min
Ap = Sp/Vp = 300/12.3 = 24.37 which would be in the LOS D range, but the solution uses...