Boats and Streams Practice Question and Answer
8 Q: A man can row upstream at 12 km/hr and dowstream at 18 km/hr. The man's rowing speed in still water is:
436 064083a423218fd8d147b6785
64083a423218fd8d147b6785- 115 km / hrtrue
- 25 km /hrfalse
- 33 km /hrfalse
- 410 km /hrfalse
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Answer : 1. "15 km / hr"
Q: The water in a river is flowing at the rate of 4 km/hr. If the width and depth of the river is 8m and 4m respectively, then how much water will enter the sea in 15 minutes.
413 0640836aa36c856ead7981490
640836aa36c856ead7981490- 1$$60000 m^3 $$false
- 2$$18000 m^3 $$false
- 3$$288000 m^3 $$false
- 4$$32000 m^3 $$true
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Answer : 4. "$$32000 m^3 $$"
Q: A boat goes from A to B in upstream and come back from B to A downstream taking a total time of 3.5 hours. If the speed of boat in still water is 7 km/hr and the speed of stream is 5 km/hr. Find the distance between A and B.
865 0605a95cf281aeb2a4f44a1cf
605a95cf281aeb2a4f44a1cf- 14 kmfalse
- 26 kmtrue
- 35 kmfalse
- 47.5 kmfalse
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Answer : 2. "6 km"
Q: A boat goes 15 km in an hour in still water, and takes thrice the time to cover the same distance upstream. The speed of the current (in km / hr) is –
825 062fb40bdd30c675eef59e1bf
62fb40bdd30c675eef59e1bf- 113 km/hrfalse
- 214 km/hrtrue
- 313 km/hrfalse
- 414 km/hrfalse
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Answer : 2. "14 km/hr"
Q: Speed of a along and against the current are 14 km / hr and 8 kms/hr respectively. The speed of the current is:
446 0640838b1a37bb1a5e169be56
640838b1a37bb1a5e169be56- 111km/hrfalse
- 26 km/hrfalse
- 31.33 km/hrfalse
- 43 km/hrtrue
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Answer : 4. "3 km/hr"
Q: If a sailer sails 12 km distance within 5 hours against the flow of a river. If he sails 22 km distance in same time along the flow of the river. Then velocity of the river is _______
2047 05e788081948fba6459010c46
5e788081948fba6459010c46- 11 km / hourtrue
- 22 km / hourfalse
- 31.5 km / hourfalse
- 42.5 km / hourfalse
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Answer : 1. "1 km / hour "
Q: A boat covers 48 km. upstream and 72 km. downstream in 12 hours, while it covers 72 km. upstream and 48 km. downstream is 13 hours. The speed of stream is -
889 060f7d5753ca0726dff34f9e6
60f7d5753ca0726dff34f9e6- 12.5 kmphfalse
- 24 kmphfalse
- 32 kmphtrue
- 42.2 kmphfalse
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Answer : 3. "2 kmph"
Q: If the speed of a boat in still water is 20 km/hr and the speed of the current is 5km / hr, then the time taken by the boat to travel 100km with the current is
413 0640839783218fd8d147b6397
640839783218fd8d147b6397- 12 hrfalse
- 23 hrfalse
- 34 hrtrue
- 47 hrfalse
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