A motor-boat is going up a river at a speed of 14.4 kmph, when its pilot sights a drifting boat which is 234 meters distant and reaches it after 52 seconds. What is the speed of the stream?
Combined speed ---> 234 m / 52 sec = 4.5 m/sec = 16.2 kmph Speed of the stream ---> 16.2-14.4=1.8 kmph
If the ratio of the speed of a boat in downstream and the speed of the stream is 10:1. If the boat can travel 320 km upstream in 20 hours then find the total distance travelled (in km) by the boat in still water in the same time?
A motor boat goes 10 km upstream and back again to starting point in 55 min. Find the speed of the motor boat in still water , if stream running at 2 kmph ?
