It takes 65 seconds for a train to cross the 990 meter bridge. It takes only 15 seconds for a train to pass through a pole at the same speed. What's the speed of the train What is its total length

It takes 65 seconds for a train to cross the 990 meter bridge. It takes only 15 seconds for a train to pass through a pole at the same speed. What's the speed of the train What is its total length

Because the distance of the train in 65-15 seconds is 990 meters,
Therefore, the speed of the train is 990 ÷ (65-15) = 19.8 M / s,
It can be concluded that the total length of the train is 19.8 × 15 = 297m