A train passes the platform in 18 seconds and a man standing on the pl

1.	A train passes the platform in 18 seconds and a man standing on the platform in 8 seconds. If the length of the train is 100 metres, the length of the platform is:1. 125 m2. 140 m3. 150 m4. 130 m
Answer» Correct Answer - Option 1 : 125 m Given: Time taken by train to cross a man = 8 seconds Time taken by train to cross a platform = 18 seconds Length of the train = 100 metres Formula Used : Distance = Speed × Time Calculation : let the length of the platform be x Total distance covered by train in 18 sec = Lenght of train + length of the platform ⇒ D = (100 + x) metres speed of the train = 100/8 m/s Total distance covered by train= speed of train × total time taken 100 +x = (100/8) × 18 ⇒ x = 225 - 100 ⇒x = 125 m ∴ The length of the platform is 125 m

A train passes the platform in 18 seconds and a man standing on the platform in 8 seconds. If the length of the train is 100 metres, the length of the platform is:1. 125 m2. 140 m3. 150 m4. 130 m

Answer» Correct Answer - Option 1 : 125 m

Given:

Time taken by train to cross a man = 8 seconds

Time taken by train to cross a platform = 18 seconds

Length of the train = 100 metres

Formula Used :

Distance = Speed × Time

Calculation :

let the length of the platform be x

Total distance covered by train in 18 sec = Lenght of train + length of the platform

⇒ D = (100 + x) metres

speed of the train = 100/8 m/s

Total distance covered by train= speed of train × total time taken

100 +x = (100/8) × 18

⇒ x = 225 - 100

⇒x = 125 m

∴ The length of the platform is 125 m

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