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Question 1
Time taken by a boat to cover 60 kms upstream is 3 hours. Calculate the time taken to travel same distance downstream by the boat if the speed of the boat in still water is 25 kmph.
Question 2
The speed of a boat in still water is 10 km/hr and stream is 2.5 km/hr. The boat cover 45 km distance both in upstream and downstream. Find the total time to complete the distance.
Question 3
A motor-boat can travel at 10 km/hour in still water. It travelled 91 km downstream in a river and then returned to the same place, taking altogether 20 hours. Find the rate of flow of river.
Question 4
The speed of a boat in still water is 6 km/hr and the speed of the stream is 1.5 km/hr. A man rows to a place at a distance of 22.5 km and comes back to the starting point. The total time taken by him is
Question 5
The speed of the current is 2 km /h. A boat goes 20 km upstream and back again to the starting point in 110 min. What is the speed of the boat in still water?
Question 6
A boat goes 12 km downstream and comes back to the starting point in 3 hours. If the speed of the current is 3 km/hr. then the speed (in km/hr) of the boat in still water is
Question 7
A boat goes 24 km upstream and 28 km downstream in 6 hours. It goes 30 km upstream and 21 km downstream in 6 hours and 30 minutes. The speed of the boat in still water is
Question 8
A boat goes from A to B 162 km apart and then returns to A upstream the river. The time taken to go to B from A is 4.5 hours less than time taken to return to A. The ratio of upstream speed of boat to downstream speed is 2:3. Find the speed of boat in still water.
Question 9
A boat goes 8km downstream and comes back the same distance in 4 hours. What is the speed of the boat in still water if the speed of the current is 4kmph?
Question 10
A man can row 6km/h in the still water. If the river is flowing at the speed of 2 km/h, it takes him 3 hours to row to a place and back. How far is the place?
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Oct 9SSC & Railway
