Lakshya Education MCQs

Question:  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:
Options:
A.10
B.6
C.5
D.4
Answer: Option C
Explanation :

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More Questions on This Topic :

Question 1.  a boatman goes 2 km against the current of the stream in 2 hour and goes 1 km along the current in 20 minutes. how long will it take to go 5 km in stationary water?
  1.    2 hr 30 min
  2.    2 hr
  3.    4 hr
  4.    1 hr 15 min
Answer: Option A
Explanation :
Question 2.  the speed of a boat in still water in 22 km/hr and the rate of current is 4 km/hr. the distance travelled downstream in 24 minutes is:
  1.    9.4 km
  2.    10.2 km
  3.    10.4 km
  4.    9.2 km
Answer: Option C
Explanation :
Question 3.  a boatman goes 2 km against the current of the stream in 2 hour and goes 1 km along the current in 20 minutes. how long will it take to go 5 km in stationary water?
  1.    2 hr 30 min
  2.    2 hr
  3.    4 hr
  4.    1 hr 15 min
Answer: Option A
Explanation :
Question 4.  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.
Answer: Option A
Explanation :
Question 5.  the speed of a boat in still water in 22 km/hr and the rate of current is 4 km/hr. the distance travelled downstream in 24 minutes is:
  1.    9.4 km
  2.    10.2 km
  3.    10.4 km
  4.    9.2 km
Answer: Option C
Explanation :
Question 6.  a boatman goes 2 km against the current of the stream in 2 hour and goes 1 km along the current in 20 minutes. how long will it take to go 5 km in stationary water?
  1.    2 hr 30 min
  2.    2 hr
  3.    4 hr
  4.    1 hr 15 min
Answer: Option A
Explanation :

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