A rescue boat takes 12 hours to row `90 km` downstream and `70 km` upstream. what is the rate of current if the boat take 9 hours to row `72 km` downstream

A man rows 25 km downstream and 20 km upstream taking 5 h each time . What is the velocity of the current ?

A boat takes 10 hours to travel 30 km upstream and 44 km downstream, but it takes 13 hours to travel 40 km upstream and 55 km downstream. Find the speed of the boat in still water and the speed of the stream.

A boat takes 8 h to row 48 km downstream and 12 h to row the same distance upstream. Find the boat's rate in still water and rate of current.

A boat take 6 hours to travel 36 km downstream and 24 km upstream. It take 9 hours to travel 48 km downstream and 40 km upstream. Find the speed of the stream and that of boat in still water.

A boat can cover 36 km downstream and 16 km upstream in 10 hours. It can cover 3 km downstream and 1.2 km upstream in 48 minutes. What is the speed (in km/hr of the boat when going upstream?

A boat travels 64 km downstream in 16 hours and 12 km upstream in 8 hours. What is the speed (in km/hr) of boat in still water?