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- A man can row upstream 10 kmph and downstream 20 kmph.
Question 1:
A man can row upstream 10 kmph and downstream 20 kmph. Find the man rate in still water and rate of the stream. A. 0,5
B. 5,5
C. 15,5
Feedback If a is rate downstream and b is rate upstream
Rate in still water = 1/2(a+b)
Rate of current = 1/2(a-b)
=> Man Rate in still water = 1/2(20+10) = 15 kmph
=> Rate of current = 1/2(20-10) = 5 kmph
Rate in still water = 1/2(a+b)
Rate of current = 1/2(a-b)
=> Man Rate in still water = 1/2(20+10) = 15 kmph
=> Rate of current = 1/2(20-10) = 5 kmph
D. 10,5
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