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प्रश्न
How long a train will take to travel a distance of 200 km with a speed of 60 km h-1 ?
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उत्तर
Distance covered by train = 200 km
Speed of train = 60 km h-1
We know speed = `"Distance" / "Time "`
⇒ 60 = `200/"Time" `
Time = `200/60` = `20/6` `10/3` hours
= 3`1/3` hours = 3 h + `1/3` hours
= 3 h + `1/3` × 60 min
= 3 h + 20 min
= 3h 20 min
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