It takes 26 seconds for a train to pass the 396 meter bridge and 18 seconds to pass the 252 meter tunnel. What's the speed of the train per second It's coming
(396-252) / (26-18) = 18 m / S
If you are in a hurry, you will not explain
(396-252) / (26-18) = 18 m / S
If you are in a hurry, you will not explain