Question

If Julie runs at a speed of 12 kilometre per hour how long will she take to run a 400 metre race ?​

Answer 1

Answer:

12 km = 12000 metre

Time = Distance / Speed

Time = 12000/400 = 30 sec.

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Answer 2

Answer:

30 seconds

Step-by-step explanation:

Speed = 12km/h

Distance = 400m = 0.4km [1 km = 1000m]

Speed = distance / time

Therefore time = distance / speed

Thus time = 12/0.4 = 30 seconds.

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