Boat and Stream Practice Question and Answer
8 Q: A Man rows to a place 63 km far and comes back in 16 hours. He finds that he can row 18 km with the flow in the same time taken to row 14 km against the flow. What is the speed of the stream?
1077 064f1eeeaa1e68c7201a2488a
64f1eeeaa1e68c7201a2488a- 11 km/hrtrue
- 22 km/hrfalse
- 32.5 km/hrfalse
- 44 km/hrfalse
- 55 km/hrfalse
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Answer : 1. "1 km/hr"
Q: The speed of a boat in still water is 10 km/h. The speed of the stream is 2 km/h. What is the total distance that the boat will travel if it is rowed for 4 hours upstream and 3 hours downstream?
1070 0642d30092b960e1a4198fab2
642d30092b960e1a4198fab2- 170 kmfalse
- 272 kmfalse
- 364 kmfalse
- 468 kmtrue
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Answer : 4. "68 km"
Q: A boat moves downstream at the rate of 1 km in $$7{1\over 2}$$ minutes and upstream at the rate of 5 km an hour. What is the speed of the boat in the still water?
1066 05f23d4823494c5438aa7c492
5f23d4823494c5438aa7c492- 14 km/hourfalse
- 23 km/hourfalse
- 38 km/hourfalse
- 4$$6{1\over 2}$$ km/hourtrue
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Answer : 4. "$$6{1\over 2}$$ km/hour "
Q: A boat goes downstream in one-third the time it takes to go upstream. Then the ratio between the speed of boat in still water and speed of the stream is
1054 062fb455d047feb07925cf495
62fb455d047feb07925cf495- 11 : 2false
- 22 : 1true
- 35 : 1false
- 43 : 2false
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Answer : 2. "2 : 1"
Q: A boat goes 10kms an hour in still water, but takes twice as much time in going the same distance against the current. The speed of the current (in km/hr) is
1047 062fb44efd30c675eef59f092
62fb44efd30c675eef59f092- 13 km/hrfalse
- 25 km/hrtrue
- 32 km/hrfalse
- 44 km/hrfalse
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Answer : 2. "5 km/hr"
Q: A boat moves 25km upstream and 39km downstream in 8 hours. It travels 35km upstream and 52km downstream in 11 hours. What is the speed of the stream if it travels at a uniform speed?
1029 0647f302fa33e0f47b76f02dd
647f302fa33e0f47b76f02dd- 15 km/hfalse
- 24 km/htrue
- 36 km/hfalse
- 43 km/hfalse
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Answer : 2. "4 km/h "
Q: A man can row downstream at a speed of 15 km/h and upstream at 11 km/h. Find his speed in still water and the speed of the current, respectively. [Give both your answers in km/h]
988 0642d33149d18d2e8ae2a7310
642d33149d18d2e8ae2a7310- 113 ; 5false
- 211 ; 4false
- 313 ; 2true
- 413 ; 6false
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Answer : 3. "13 ; 2 "
Q: The speed of a boat in still water is 10 km/hr. It covers (upstream) a distance of 45 km in 6 hours. The speed (in km/hr) of the stream is :
943 05f23e0653494c5438aa7fd32
5f23e0653494c5438aa7fd32- 13.5 km/hfalse
- 24 km/hfalse
- 32.5 km/htrue
- 43 km/hfalse
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