1. The formula of t = d/s means time equals distance divided by speed, which eventually gives us the time calculated in the train problems. Ans. To find the speed in train problems, the application of the formula speed = distance divided by time.
2. The formula for calculating speed is Speed = Distance/Time. Another essential formula is Time = Distance/Speed.
3. Train problem is a quantitative aptitude problem related to speed, time, and distance.
