Multiple choice

A train is travelling at a rate of 45 km/hr. How many seconds, it will take to cover a distance of 4/5 km?.

  1. 36 second

  2. 64 second

  3. 90 second

  4. 120 second
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Distance = 4/5 km = 800 meters. Speed = 45 km/hr = 45 * 5/18 = 12.5 m/s. Time = 800 / 12.5 = 64 seconds.

AI explanation

To find the time in seconds, first convert the train's speed from km/hr to m/s by multiplying by 5/18. This makes the speed 45 multiplied by 5/18, which equals 12.5 m/s. Using the formula Time equals Distance divided by Speed, divide the distance of 4/5 km (or 800 meters) by 12.5 m/s to get 64 seconds.

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