Question

A man can row upstream 11km/hr and downstream at 16 km/hr. Find man's rate in still water.

Answer 1

the man's rowing speed is 13.5 km/h

Answer 2

If 'a' km/ h is rate downstream and 'by km/ h is rate upstream 

Rate in still water = 1/2(a+b)

Rate in still water = 1/2 ( 16 + 11 )

= 13.5 km/ h
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The man's rate in still water is 13.5 km/h

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