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Quantitative Aptitude

BOATS AND STREAMS MCQs

Total Questions : 948 | Page 5 of 95 pages
Question 41.  a man can row upstream at 7 kmph and downstream at 10 kmph. find man's rate in still water and the rate of current .
  1.    1 km/hr
  2.     1.5 km/hr
  3.    2 m/hr
  4.    2.5 km/hr
 Discuss Question
Answer: Option B. ->  1.5 km/hr
Explanation :
Question 42.  in one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. the speed of the boat in still water (in km/hr) is:
  1.    3 km/hr
  2.    5 km/hr
  3.    8 km/hr
  4.    9 km/hr
 Discuss Question
Answer: Option C. -> 8 km/hr
Explanation :
Question 43.  a boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is?
  1.    5 kmph
  2.    10 kmph
  3.    30 kmph
  4.    15 kmph
 Discuss Question
Answer: Option A. -> 5 kmph
Explanation :
Question 44.  a man rows his boat 85 km downstream and 45 km upstream, taking 2 1/2 hours each time. find the speed of the stream?
  1.    5 kmph
  2.    6 kmph
  3.    7 kmph
  4.    8 kmph
 Discuss Question
Answer: Option D. -> 8 kmph
Explanation :
Question 45.  a motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. the speed of the stream (in km/hr) is:
  1.    10
  2.    6
  3.    5
  4.    4
 Discuss Question
Answer: Option C. -> 5
Explanation :
Question 46.  a man rows to a place 48 km distant and come back in 14 hours. he finds that he can row 4 km with the stream in the same time as 3 km against the stream. the rate of the stream is:
  1.    1 km/hr. 
  2.    2 km/hr
  3.    1.5 km/hr. 
  4.    2.5 km/hr.
 Discuss Question
Answer: Option A. -> 1 km/hr. 
Explanation :
Question 47.  a boat covers a certain distance downstream in 1 hour, while it comes back in 11⁄2 hours. if the speed of the stream be 3 kmph, what is the speed of the boat in still water?
  1.    14 kmph
  2.    15 kmph
  3.    13 kmph
  4.    12 kmph
 Discuss Question
Answer: Option B. -> 15 kmph
Explanation :
Question 48.  a man rows to a place 48 km distant and come back in 14 hours. he finds that he can row 4 km with the stream in the same time as 3 km against the stream. the rate of the stream is:
  1.    1 km/hr. 
  2.    2 km/hr
  3.    1.5 km/hr. 
  4.    2.5 km/hr.
 Discuss Question
Answer: Option A. -> 1 km/hr. 
Explanation :
Question 49.  a boat covers a certain distance downstream in 1 hour, while it comes back in 11⁄2 hours. if the speed of the stream be 3 kmph, what is the speed of the boat in still water?
  1.    14 kmph
  2.    15 kmph
  3.    13 kmph
  4.    12 kmph
 Discuss Question
Answer: Option B. -> 15 kmph
Explanation :
Question 50.  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 :

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