Question

A train 210 m long took 12 seconds to pass a 90 m long tunnel. Find the speed of
the train.
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Answer 1

Answer:

Length of train = 210 m.

Length of tunnel = 90 m.

Therefore, total distance = 210 + 90 = 300 m.

Time taken = 12 s.

Therefore, v = s/t

                    = 300/12.

                    = 25 m/s.

                    = 25 X 3600/1000

                    = 90 km/h.

Therefore, the speed of train is 90 km/h

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Answer 2

refer to the attachment

refer to the attachment hope this helps you xD

refer to the attachment hope this helps you xDmark as brainliest