Quantitative Aptitude
BOATS AND STREAMS MCQs
Total Questions : 948
| Page 4 of 95 pages
Answer: Option A. -> 1 km/hr
Suppose he move 4 km downstream in x hours. Then,
Speed downstream = \(\left(\frac{4}{x}\right)\) km/hr
Speed upstream = \(\left(\frac{3}{x}\right)\) km/hr
So, \(\frac{48}{(\frac{4}{x})} + \frac{48}{(\frac{3}{x})}= 14 or x=\frac{1}{2}\)
So, Speed downstream = 8 km/hr, Speed upstream = 6 km/hr.
Rate of the stream = \(\frac{1}{2}\) (8 - 6) km/hr = 1 km/hr
Answer: Option D. -> 14, 4
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Answer: Option D. -> 30/13 hours
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Answer: Option A. -> 2 Km/hr
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Answer: Option B. -> 3:1
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Answer: Option A. -> 36 km
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Answer: Option C. -> 16 hrs
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Answer: Option C. -> 8 : 3
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Answer: Option B. -> 12 hours
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Answer: Option C. -> 13 km/hr
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