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A horse starts to chase a dog that has left the stable two hours earlier. The horse runs at an average speed of 22km/hr. It crosses a 10 metre road, two small ponds 3 metres deep, and finally runs along two small streets of 200 metres long. After traveling 6 hrs, 2 hrs after sunset, it catches the dog. Compute the speed of the dog in Km/hr?
A20 Km/hr
B22 Km/hr
C16.5 Km/hr
D18.5 Km/hr
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STEP-BY-STEP
We have the speed of horse = 22 kmph
And it ran for 6 hours.
Hence distance covered by it in 6 hours = 22 * 6
= 132 km
We know that dog has covered the same distance in 6 + 2 = 8 hours.
Hence speed of the dog = 132 / 8
= 16.5 kmph
And it ran for 6 hours.
Hence distance covered by it in 6 hours = 22 * 6
= 132 km
We know that dog has covered the same distance in 6 + 2 = 8 hours.
Hence speed of the dog = 132 / 8
= 16.5 kmph
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