004

Part of 1935 Moscow Mathematical Olympiad

Problems(1)

MMO 004 Moscow MO 1935 train, bridge, length, speed

Source:

A train passes an observer in

t_1

sec. At the same speed the train crosses a bridge

\ell

m long. It takes the train

t_2

sec to cross the bridge from the moment the locomotive drives onto the bridge until the last car leaves it. Find the length and speed of the train.

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