Boats & Streams Mcqs


Q.  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?

a. 13, 3
b. 12, 6
c. 15, 3
d. 14, 4


ANSWER: See Answer
 
Let the speed of the man in still water and speed of stream be x kmph and y kmph respectively.

Given x + y = 18 — (1)
and x – y = 10 — (2)
From (1) & (2) 2x = 28 => x = 14, y = 4.
MCQs:  If a man rows at the rate of 5 kmph in still water and his rate against the current is 3.5 kmph. then the man’s rate along the current is__________?
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MCQs:  A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is________?
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