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A train running at a certain speed cross...

A train running at a certain speed crosses a stationary engine in 20 seconds. To find out the speed of the train, which of the following information is necessary ?

A

Only the length of the train

B

Only the length of the engine

C

Either the length of the train or the length of the engine

D

Both the length of the train and the length of the engine

Text Solution

Verified by Experts

The correct Answer is:
D
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