# What is the length of Train? If

A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds. Its length is:

- 150 m
- 50 m
- 200 m
- Data inadequate

**Answer: (1) 150 m
Explanation:-
**Let be the length of the train = X mitres

According to the question,

X/15 = (X + 100)/25

25X = 15X + 1500

25X – 15X = 1500

10X = 1500

X = 150

Hence, the length of the train is 150 m.