A boat travels at 8 km/hr in still water and water flows at 4 km/hr. The speed of the boat if it goes against the water stream is?
A boat moves at 11 km/hr in still water and the water stream flows at 9 km/hr. The speed of the boat if it goes along with the water stream is?
Assume that you are in a boat and your boat goes along with the water stream with a speed of 10 km/hr. And the speed of the stream is 5 km/hr. Then what is the effective speed of your boat in this case?