Question

a train 100m long running at 36 km per hour takes 25 seconds to pass a bridge what is the length of the bridge

Answer 1

Let length of Bridge be x
then,
total distance covered will be 100+x metres.

Changing Km/h into m/s
$36 \times \frac{5}{18} \\ = 2 \times 5 \\ = 10 \: mps$
Now,
$d = s \times t \\ 100 + x = 10 \times 25 \\ 100 + x = 250 \\ x = 150 \: metres$
length of bridge = 150 metres

Answer 2

Answer:

The length of the bridge is 150 Meters.

Step-by-step explanation:

Hey Mate,

Given Data,

Length of Train = 100 M

Speed of Train =  36 KM / Hour

Train take 25 seconds to cross a bridge.

So,

X + 100 = 36 × $\frac{5}{18}$ × 25

X + 100 = 4500 / 18

X + 100 = 250

X = 150 M

The length of the bridge is 150 Meters.