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Quantitative Aptitude

BOATS AND STREAMS MCQs

Total Questions : 948 | Page 6 of 95 pages
Question 51.  a man can row downstream at 18 kmph and upstream at 10 kmph. find the speed of the man in still water and the speed of stream respectively?
  1.    13, 3
  2.    12, 6
  3.    15, 3
  4.    14, 4
 Discuss Question
Answer: Option D. -> 14, 4
Explanation :
Question 52.  the time taken by a man to row his boat upstream is twice the time taken by him to row the same distance downstream. if the speed of the boat in still water is 42 kmph, find the speed of the stream?
  1.    12 kmph
  2.    13 kmph
  3.    14 kmph
  4.    15 kmph
 Discuss Question
Answer: Option C. -> 14 kmph
Explanation :
Question 53.  a man can row a boat at 20 kmph in still water. if the speed of the stream is 6 kmph, what is the time taken to row a distance of 60 km downstream?
  1.    0/6 hours
  2.    27/2 hours
  3.    30 hours
  4.    30/13 hours
 Discuss Question
Answer: Option D. -> 30/13 hours
Explanation :
Question 54.  a person can row at 9 kmph and still water. he takes 4 1/2 hours to row from a to b and back. what is the distance between a and b if the speed of the stream is 1 kmph?
  1.    32 km
  2.    25 km
  3.    28 km
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Explanation :
Question 55.  a man can row 30 km downstream and 20 km upstream in 4 hours. he can row 45 km downstream and 40 km upstream in 7 hours. find the speed of man in still water?
  1.    15 kmph
  2.    10 kmph
  3.    12 kmph
  4.    12.5 kmph
 Discuss Question
Answer: Option D. -> 12.5 kmph
Explanation :
Question 56.  the time taken by a man to row his boat upstream is twice the time taken by him to row the same distance downstream. if the speed of the boat in still water is 42 kmph, find the speed of the stream?
  1.    12 kmph
  2.    13 kmph
  3.    14 kmph
  4.    15 kmph
 Discuss Question
Answer: Option C. -> 14 kmph
Explanation :
Question 57.  a person can row at 9 kmph and still water. he takes 4 1/2 hours to row from a to b and back. what is the distance between a and b if the speed of the stream is 1 kmph?
  1.    32 km
  2.    25 km
  3.    28 km
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Explanation :
Question 58.  a man can row 30 km downstream and 20 km upstream in 4 hours. he can row 45 km downstream and 40 km upstream in 7 hours. find the speed of man in still water?
  1.    15 kmph
  2.    10 kmph
  3.    12 kmph
  4.    12.5 kmph
 Discuss Question
Answer: Option D. -> 12.5 kmph
Explanation :
Question 59.  a man can row 24 kmph in still water. it takes him thrice as long to row up as to row down the river. find the rate of the stream?
  1.    4 kmph
  2.    12 kmph
  3.    6 kmph
  4.    1 kmph
 Discuss Question
Answer: Option B. -> 12 kmph
Explanation :
Question 60.  a man can row downstream at the rate of 24 kmph and upstream at 7 kmph. find the man’s rate in still water and rate of current?
  1.    15.5 Kmph, 8.5 Kmph
  2.    17 Kmph, 8.5 Kmph
  3.    814 Kmph, 7 Kmph
  4.    None of these
 Discuss Question
Answer: Option A. -> 15.5 Kmph, 8.5 Kmph
Explanation :

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