A train running at a speed of 54 km/hr crosses a platform which is double of the length of the train in 18 seconds. What is the length of the platform and train.
Answer & explanation
Correct answer: option 1
Let length of train = Lm
length of platform = 2L
Speed of train = 54 km/hr = 54 × \(\frac{5}{18}\) m/s = 15 m/s
Distance traveled by train to cross the platform = L + 2L = 3L
Distance = speed × time
⇒ 3L = 15 × 18
⇒ L = 90
Length of train = 90m
length of platform = 2 × 90 = 180m