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Question 1
If a boat goes a certain distance at 30 km/hr and comes back the same distance at 60 km/hr. What is the average speed (in km/hr) for the total journey?
Question 2
Speed of a duck in the direction of stream is 15 km/h. While the speed of the stream is 1.5 km/h. What is the speed of duck against the stream?
Question 3
Two boats A and B are 55 km apart. Their speed in still water are 4 km/h and 7 km/h. Both start at the same time towards each other. If A going downstream and B going upstream, after how much time will they meet each other?
Question 4
A swimmer takes double of time taken by him to go downstream while coming upstream covering the same distance. If speed of water is 3 km/h, Find the speed of swimmer:
Question 5
A boatman goes 6 km upstream and back again to the starting point in 2 hrs. If the speed of water 4 km/h, find the speed of boat.
Question 6
A boatman goes 39 km downstream and 25 km upstream and takes 8 hrs. While it takes 10 hrs. to go 52 km downstream and 30 km upstream. Find the speed of boat.
Question 7
A boat takes 3 hrs to travel from A to B downstream and back from B to A upstream. If the speed of the boat in still water is 4 km/h, what is the distance between two places?
Question 8
A man can row 5 km/h in still water. If the speed of the current is 1 km/h and it takes him 1 hr to row a place and come back, how far is the place?
Question 9
A swimmer can row 12 km downstream and 4 km against the stream in the same time of 2 hours. Find the speed of stream.
Question 10
A man can row a certain distance downstream in 6 hours and return the same distance in 9 hours. If the stream flows at the rate of 3 km/hr then find the speed of man in still water.
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Feb 10SSC & Railway
