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

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A man crosses a road 250 metres wide in 75 seconds. His speed in km/hr is :
1). 10
2). 12
3). 12.5
4). 15

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3 answers

3 vote
Answered by on | Votes 3 |
12

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0 vote
Answered by on | Votes 0 |
We know that, Speed=distance/time Speed=$\frac{250}{75}$ m/sec Also, we know that, 1 m/sec =$\frac{18}{5}$ km/h =$\frac{250}{75}\times\frac{18}{5}$ =12 km/hr




2 vote
Answered by on | Votes 2 |

Speed =$\frac{Distance}{time}=\frac{250}{75}$

= 2 × 6 km/hr. = 12 km/hr.

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