Answered

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A 450 m long freight train passes through a tunnel at a speed of 20 m/sec.
On the return journey it takes 45 sec longer for the train to pass completely
through the same tunnel when it travels at a lower speed of 15 m/sec. How
long is the tunnel?

Sagot :

likithcreations7

Answer:

5000 is the answer ok my child

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