Question

The time taken by 600 meter long
train moving at a speed of 60
Km/hour to cross a 2.4 km tunnel is.
(A) 30 minutes (B) 15 minutes
(C) 2 minutes (D) 3 minutes​

Answer 1

Answer:

(D)

Step-by-step explanation:

600 meters = 0.6km

The train will have to travel an extra 0.6km to the 2.4km tunnel because of its length. 0.6 + 2.4 = 3km

60km/h travels 3km in 1/20 of an hour.  (60 / 3 = 20)

1/20 of an hour is 3 minutes, so the answer is (D).

Hope this was helpful!