Question 1

A 270 meters long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train ?

Solution

Relative speed = (120 + 80) kmph (or) 200 kmph, Relative time = 9 seconds, Relative distance = (270 + x) meters

Let x be the length of other train.

We know that,

Distance = speed x time

270 + x = 200 x $$\frac{5}{18}$$ x 9

270 + x = 100 x 5

x = 500 - 270 (or) 230 meters.

Hence, option D is the correct answer.

Share on Whatsapp Share on Whatsapp

Create a FREE account and get: