men are running in a line along a road with velocity 9 km hr

Last updated: 6/13/2023

men are running in a line along a road with velocity 9 km hr behind one another at equal intervals of 20m Cyclist are also riding along the same line in the same direction at 18 km hr at equal intervals of 30m The speed with which an observe must travel along the road in opposite direction so that whenever he meets a runner he also meet a cyclist is A 9 km h B 12 km h C 18 km h D 6 km h