Question

A train is moving at a speed of 100 mph. If the length of the train is 0.90 miles, how long will it take to cross a railway platform 0.5 miles long?

• A. 50.4 s
• B. 4 s
• C. 110.8 s
• D. 60 s

Answer 1

The correct option is A 50.4 s

Speed of the train = 100 mph
Length of platform = 0.5 miles

So, distance covered by the train in passing the platform = 0.9 + 0.5 = 1.4 miles

We know,
$\text{Time taken}=\frac{Distance}{Speed}$

$=\frac{1.4}{100}$

$=0.014\text{h}$

$=0.014\times 3600\text{s}$

$=50.4\text{s}$

Hence, the train will take 50.4 seconds to cross the platform.