Question

A train traveling at 60km/hr enters a tunnel that is 5km long. The train is one km long. How long does it take for the whole train to pass through the tunnel?
A) 7
B) 4
C)6
D)5​

Answer 1

Step-by-step explanation:

Let the length of the train be x. Running at a speed of 60 kmph it passes through a 1.5 km long tunnel in 2 mins.

The distance covered by the engine is (x+1.5+x) in 2 minutes.

60 km covered in 60 min so in 2 min the engine would have covered 60*6/60 = 2 km.

Therefore (x+1.5+x) = 2 or

2x = 2–1.5 = 0.5, or

x = 0.25 km So the train is 250 m long.

Answer 2

Answer:

d is the answer of this question s