Question

A person crosses a 600m Long Street in5min . what is his speed in k per hour​

Answer 1

Distance=600minutes

time 5 minutes 

Speed = ? 

Speed = (600/(5*60)) 

Speed = 2 m/sec. 

 

Converting m/sec to km/hr 

Speed = (2 *(18/5)) km/hr 

Speed = 7.2 km/hr.

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Answer 2

Answer:

Hii..

$.$

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There are 60 minutes in an hour. Whatever distance a person crosses in 5 mins, he/she can cross 12 times that distance in 1 hour. So, in one hour the person could have crossed 12 X 600 = 7200 meters.

But, 1000 meters equal one kilometer. So, 7200m = 7.2 km. Thus, this person travels 7.2 km in one hour, and hence has a speed of 7.2 km/hr.

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In steps:-

Distance = 600m = 3/5 km

time = 5 minutes ——→ 5/60 = 1/12 hour

speed = distance / time = (3/5)/(1/12) = 36/5

→ 7.2 km/hr

speed = 7.2 km/hr.

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Hope it helps you dear!