A train covers 24000 m in 300 seconds. Find the speed of the train in km/hr.
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1 km =1000 m
=> 1 m = 1/1000 km
Now,
Distance => 24000 m ÷1000 = 24 km
And
1 hour = 60 min = 60×60 seconds= 3600 seconds
=> 1 sec = 1/ 3600 hours
Then ,
Time =>300 sec = 300÷ 3600 = 1/ 12 hours
Speed = Distance / Time
Speed = 24 ÷ 1/12 = 24 × 12 = 288 km/hour
Shortcut
Speed = Distance / Time
Speed = 24000/ 300 = 80 m/s
= > 80 × 18/5 = 288 km/hour
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