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The section of boat and stream is an important topic of mathematics subject from competitive examinations like SSC, UPSC, Railways, Banking, which we can understand by the adaptive and counter current of the stream. Questions related to boat and stream can be solved only by understanding the formulas, like speed of boat = (speed in the direction of the...
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Speed of a boat in still water is 6 km/hr and speed of the current is 2 km/hr. If boat takes four hours more in upstream than in the downstream to cover ‘D’ km, then find time take by boat to cover ‘D’ km in still water?
686 0 63d0d9e55392140e28ef4c90- 15 hours 30 minutesfalse
- 25 hours 45 minutesfalse
- 35 hours 10 minutesfalse
- 45 hours 20 minutestrue
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Answer : 4 5 hours 20 minutes
A boat can row 15 km per hour downstream and 9 km per hour upstream. The speed (in km/hour) of the boat in still water is:
807 0 639c92e14eaee21296c2cb05- 18false
- 210false
- 312true
- 415false
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Answer : 3 12
Speed of current is 10% of speed of boat in still water and the time taken by the boat to cover X km in downstream is 100% more than time taken by the boat to cover (X-45) km in upstream. Find the value of X?
950 0 61c20847dc4f51660a437e64- 160 kmfalse
- 287 kmfalse
- 399 kmtrue
- 4108 kmfalse
- 590 kmfalse
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Answer : 3 99 km
A boat running upstream takes 7 hours and 40 minutes to cover a certain distance while it takes 5 hours to cover the same distance downstream. What is the ratio between the speed of the current and speed of the boat respectively?
845 0 60f7d8563ca0726dff350803- 113: 4false
- 217: 4false
- 319: 4false
- 44: 19true
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Answer : 4 4: 19
A person rows a distance of $$ {3{3\over4}{ \ km}}$$ upstream in $$ {1{1\over 2}{\ hours}}$$ and a distance of 13 km downstream in 2 hours. How much time ( in hours) will the person take to row a distance of 90 km in still water?
988 0 60532282528a962d2e42e297- 118false
- 224false
- 320true
- 415false
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