Speed of water in certain river is 2 km/h and it takes a boat thrice as long to row up as to row down the river. Find the speed of the boat in still water?
Correct answer D. 4 km/h
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See allImran speed of rowing in still water is 9 km/h and he finds that it takes him twice as long to row up as to row down the river. Find the speed of water in the river?
Correct answer B. 3 km/h
A man travel in his yacht downstream at d knots and returns the same distance upstream at u knots. What is his average rate for the round trip if the length of stream is 1?
Correct answer D. 2du/(d+u)
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A man can row down a 10 mile stream in 2 hours and up in 5 hours. What is the average speed in miles per hour?
Correct answer C. 2 6?7
A man rowing a boat covers an average distance of 7.5 km/hr. What is the distance covered after 40 minutes?
Correct answer A. 5
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