A 160 m long train passes a signal post in 8 seconds. At the same speed, how long will it take to pass a 240 m platform?

Explanation

1. 01

   Speed $= \frac{160}{8} = 20$ m/s.

2. 02

   Platform crossing distance = $160 + 240 = 400$ m.

3. 03

   Time $= \frac{400}{20} = 20$ s.