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Since the train covers different distance with different speeds. So, Average speed = Total Distance/Total Time Total distance = 40 + 33 + 80 = 153 km Time1 = 40/30, Time2 = 33/44 & Time3 = 80/64 Total Time = 40/30 + 33/44 + 80/64 Therefore, Average Speed = 153/(40/30 + 33/44 + 80/64) = 45.9 km/hr
Motor boat covers a certain distance downstream in 10 hours. It covers the same distance upstream in 15 hours. If the speed of the water is 9 km/hr, t...
The speed of the stream is 14 km/h. Boat ‘A’ covers 64 km distance against the stream in 4 hours and boat ‘B’ covers 95 km distance against the ...
A motorboat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 and a half an hour. If the speed of th...
The velocity of a boat when moving downstream is 18 km/h greater than the speed of the stream. If it takes the boat 8 hours to travel 192 km downstream,...
A submarine can travel a certain distance downstream in 4 hours and the same distance upstream in 8 hours. If the submarine's speed in still water is 12...
Two boats A and B start towards each other from two places, 600 km apart. Speed of the boat A and B in still water are 23 km/h and 17 km/h respectively....
A boat's speed in calm water exceeds the speed of the current by 12 km/hr. Given that the current's speed is 1.25x km/hr and the boat takes 5 hours to t...
Speed of a boat in still water to speed of boat in upstream is 8:5. If the boat can travel 440 km in downstream in 5 hours, then find the time taken by ...
A man takes 10 hours to row 21 km upstream from point A to point B and back to A by boat. If he takes the same time to row 7 km downstream as upstream. ...
The speed of the stream is 15 km/h. Boat ‘A’ covers 140 km distance against the stream in 4 hours and boat ‘B’ covers 105 km distance against th...
