Question

a swimmer crosses a river of width four hundred metres in 5 minutes.his speed in km/hour is

Answer 1

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Speed = Distance / Time

As we know,

1 km = 1000 m

So, 400 m = 4/10 m

For time,

5 min = 0.083 hours

Now,

Speed =( 4/10) / 0.083

= 3.32 km/hr

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