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Question 1
A boat goes 15 km upstream and 
km downstream in 3 hours 15 minutes. It goes 12 km upstream and 14 km downstream in 3 hours. What is the speed of the boat in still water?
km downstream in 3 hours 15 minutes. It goes 12 km upstream and 14 km downstream in 3 hours. What is the speed of the boat in still water? Question 2
A person can row a boat with a speed of 30 km/h in still water. Speed of current is 6 km/h. He starts from A to B and comes back in 2 hr 30 min. What is distance between A and B?
Question 3
A person can cover a certain distance in upstream and still water in 10 hrs and 6 hrs respectively. If the speed of current is 4 km/h then what is the time required to cover a distance of 56 km in downstream?
Question 4
A person can cover a distance of 40 km upstream and 30 km downstream 5 hrs and 30 km upstream and 30 km downstream in 4 hrs. What is speed of boat in still water?
Question 5
A person can swim 40 km in 3 hrs 20 min in upstream. If speed of persons is 3 times of the speed of current then what is time required to cover this distance in downstream?
Question 6
A man swims downstream a distance of 15 km in 1 hour. If the speed of the current is 5 km/hour, the time taken by the man to swim the same distance upstream is
Question 7
A sailor goes 12 km downstream in 48 minutes and returns in 1 hour 20 minutes. The speed of the sailor in still water is:
Question 8
A person can row 
km an hour in still water and he finds that it takes him twice as long to row up as to row down the river. The speed of the stream is:
km an hour in still water and he finds that it takes him twice as long to row up as to row down the river. The speed of the stream is: Question 9
A man can swim 3 km/hr. in still water. If the velocity of the stream is 2 km/hr., the time taken by him to swim to a place 10 km upstream and back is :
Question 10
A motor boat can travel at 10km/h in still water. It travelled 91 km downstream in a river and then returned, taking altogether 20 hours. Find the rate of flow of river.
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Oct 5SSC & Railway
