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1. A man can row downstream at 10 kmph and upstream at 5 kmp. The man's rowing rate in still water is--
- A. 2.5 km/hr
- B. 2.5 km/hr
- C. 2.5 km/hr
- D. 2.5 km/hr
Answer: Option C
Explanation:
Let the man's rowing rate and stream's flowing rate be U and V respectively.
So, U + V = 10
And, U - V = 5
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U + U = 10 + 5 [By addition]
or, 2U = 15
So, U = 7.5 km/hr
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