The pedestrian and the cyclist set off from the same place, so that the pedestrian left half an hour earlier than the cyclist. How long did the pedestrian have time to walk before the cyclist reached him? The speed of the pedestrian was [[$ 6 $]] km / h and the speed of the cyclist was [[$ 10 $]] km / h. How long had the pedestrian been on the move?



The pedestrian walked km and had been on the move for h min.