Question

A train covers a distance of 10 kilometer in 12 minutes. what is the speed of the train?

Answer 1

Answer:

$10km = 10000m \\ 12min = 12 \times 60 = 720sec \\ speed = \frac{distance}{time} = \frac{10000}{720} \\ = \frac{5000}{360} = \frac{500}{36} = \frac{250}{18} = \frac{125}{9} m |sec| \\ = \frac{125}{9} \times \frac{18}{5} = 25 \times 2 = 50km |h$

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