Question

Two trains of lengths 120 m and 180 m cross each other in 15 seconds. If the
speed of one of the trains is 40 km/h, find the speed of the other train?
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Answer 1

Answer:

Speed= 54 km/hr =54 *(1000/3600)m/sec = 15 m/sec. Length of the train = (Speed * Time) = 15 * 30= 450 m.

here I explained with another example it's maths u have to try ur own u try it now I think this question is 8th or 7th classes

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