A train 280 m long is moving at a speed of 60 kmph. What is the time taken by the train to cross a platform 220 m long?

- 45 s
- 40 s
- 35 s
- 30 s

**Solution**

Total distance = length of train + length of platform

d = 280 m + 220 m = 500 m

Speed, s = 60 km/h = 60*5/18 m/s = 50/3 m/s

Time, t = d/s = 30 s

**Correct option is D.**