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Start learning 50% faster. Sign in nowRate downstream = (13 + 3) kmph = 16 kmph Rate upstream = (13 – 3) kmph = 10 kmph According to the question, Time = Distance/Speed Hence, Required time = 80/16 + 80/10 = 5 + 8 =13 hours
A boy can swim in water with a speed of 13 km/hr in still water. If the speed of the stream is 5 km/hr, what will be the time taken by the boy to cover ...
A boat covers 13 km upstream in 52 min. If the speed of the current is 6 km / h, then in how much time will it cover 40 km downstream?
The speed of a boat is that of the current of water is 40:3. The boat goes along with the current in 3 hours 8 minutes. It will come back in
A man rows to a place 221 km away and comes back to the starting point. If the speed of the stream is 2 km/hr and the speed of the boat in still water i...
The ratio of the speed of boats ‘A’ and ‘B’ in still water is 8:9, respectively. The speed of the current is 25% of the speed of boat ‘A’ in...
Ratio of speed of boat in downstream and speed of stream is 9:5, if speed of current is 10 km/hr, then find distance travelled (in km) upstream in 6 hours.
Find the total distance covered by boat in each upstream and downstream in 5 hours if the speed of boat in still water and speed of current is 20 km/h a...
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...
A boat goes 5 km an hour in still water, but takes twice as much time in going the same distance against the current. The speed of the current (in km/ho...
If a river is flowing at a rate of 6 km/hr and a boat's speed in still water is 150% higher than the river's speed, and the boat travels 'd' kilometers ...
