Boats and Streams on Arithmetic Aptitude related Questions and Answers

Question 1 : In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
1. 3 km/hr
2. 5 km/hr
3. 8 km/hr
4. 9 km/hr
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Question 2 : A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:
1. 4
2. 5
3. 6
4. 10
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Question 3 : A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively?
1. 2:01
2. 3:02
3. 8:03
4. Cannot be determined
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Question 4 : A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:
1. 8.5 km/hr
2. 9 km/hr
3. 10 km/hr
4. 12.5 km/hr
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Question 5 : A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
1. 2 hours
2. 3 hours
3. 4 hours
4. 5 hours
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Question 6 : A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
1. 40 minutes
2. 1 hour
3. 1 hr 15 min
4. 1 hr 30 min
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Question 7 : Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:
1. 16 hours
2. 18 hours
3. 20 hours
4. 24 hours
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Question 8 : A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:
1. 2:01
2. 3:01
3. 3:01
4. 4:03
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Question 9 : A man rows to a place 48 km distant and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:
1. 1 km/hr
2. 1.5 km/hr
3. 2 km/hr
4. 2.5 km/hr
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Question 10 : A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water?
1. 4 km/hr
2. 6 km/hr
3. 8 km/hr
4. Data inadequate
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