A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?

Given Data

• Train length = 240 m
• Time to pass a pole = 24 s
• Platform length = 650 m
• Required: time to pass the platform completely

Step 1: Find the speed of the trainSpeed v = distance ÷ time = 240 ÷ 24 = 10 m/s

Step 2: Total distance to pass the platformDistance = train length + platform length = 240 + 650 = 890 m

Step 3: Time to cross the platformt = distance ÷ speed = 890 ÷ 10 = 89 s

Checks & Common Pitfalls

• Passing a pole uses only train length to get speed.
• Passing a platform requires adding train and platform lengths.
• Keep units consistent; speed is already in m/s, so keep distance in meters.

Final AnswerThe time taken to pass the platform is 89 s.