A man can swim with a …
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Sahdev Sharma 8 years, 5 months ago
Speed of the man, vm = 4 km/h
Width of the river = 1 km
Time taken to cross the river = {tex}Width\ of \ the \ river \over Speed \ of \ the \ river {/tex}{tex}= { 1\over 4} h ={ 1 × 60 \over 4 }= 15\ min{/tex}
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