It really depends on what windows they are. if they are 3mx3m glass with no frames, probably 100m hr.
if they are georgian sashes, about 25m hour with the pole.
Trad cleaning and scraping windows for builders clean usually takes 2 - 3 times as long as just cleaning them.
these are only blind estimates. condition of frames, how dirty the windows are, have they previously been trad cleaned, how high they are, are all things to consider.