A boat’s downstream and upstream speeds are 8 km/h and 4 km/h respectively. If it travels 60 km downstream and 40 km upstream in 5 hours, and in another 4 hours, it travels 30 km downstream and 20 km upstream, what is the boat’s speed in still water?
A boat’s downstream and upstream speeds are 8 km/h and 4 km/h…
Written by
in
Leave a Reply