Question

A train passes a railway bridge 150 m long in 18 seconds. If the train is running at a speed of 60km/hr, then the length of the train in meters is

• A. 160m
• B. 150m
• C. 180 m
• D. None of these

Answer 1

The correct option is B 150m

(b)
Let the length of the train be x m.
$\therefore$ Total distance covered by the train = (x+150)m
Speed of the train = 60 km/hr
$=60\times \frac{5}{18}=\frac{50}{3}m/\sec$

Since, Distance = Speed $\times$ times

$\therefore x+150=\frac{50}{3}\times 18=300$
or, x =300-150 = 150 m.
$\therefore$ Length of the train = 150m.