A man crosses a road 250 meters wide in 75 seconds. His speed in km/hr is:

A man crosses a road 250 meters wide in 75 seconds. His speed in km/hr is:
[A]12.5
[B]15
[C]10
[D]12

12
Speed = \frac{Distance }{Time}=\frac{250}{75}
=\frac{10}{3}m/s=\frac{10}{3}\times \frac{18}{5}km/hr
=2\times 6 km/hr= 12 km/hr
Hence option [D] is the right answer.

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