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Start learning 50% faster. Sign in nowAverage speed of whole journey = 80 km/hr Using the formula, average speed = 2xy/(x + y) ⇒ x = speed of first 125 km = 60 km/hr ⇒ 80 = 2 × (60 × y)/(60 + y) ⇒ 120 km/hr
A boat travels in a river where the current flows at a speed of 5 km/h. The total time taken by the boat to go from point 'P' to ...
A boat can cover 210 km in downstream in 10 hours and 160 km in upstream in 8 hours. Find the distance travelled by the boat in still water in 6 hours.
The speed of a boat in still water is 8 km/hr and speed of current is 4 km/hr. If time taken to cover a certain distance upstream is 12 hours, then how ...
A man can row the boat x km downstream and the same distance upstream in 12 hours. Also, he can row the boat 5x km downstream in 10 hours. At what tim...
A boat can cover 170 km in downstream in 2 hours and 145 km in upstream in 5 hours. Find the speed of boat in still water.
The speed of a boat in still water is 20 km/hr. If the boat covers 80 km in upstream in 8 hours, then find the time taken by the boat to travel 150 km i...
A boat running downstream covers a distance of 39 km in 3 hrs and covering the same distance upstream in 13 hrs. What is the speed of a boat in still wa...
A boat takes 14 hours to travel 112 km against the current. If the speed of the current is 4 km/hr, how much time will it take for the boat to travel 19...
If Boat goes 80 km upstream in 4 hours and 60 km downstream in 2 hours, then the speed of the boat in still water is
A boat covers a distance of 338 km upstream in 13 hours. After rain, the speed of the stream increases by 50%, and the speed of t...
