Subject: General Aptitude · Chapter: Problems on Trains · Exam: 2006 · Marks: · Difficulty:
A man standing on a platform finds that a train takes 3 seconds to pass him and another train of the same length moving in the opposite direction takes 4 seconds. The time taken by the trains to pass each other will be
(a)$2 \frac{3}{7}$ seconds
(b)$3 \frac{3}{7}$ seconds
(c)$4 \frac{3}{7}$ seconds
(d)$5 \frac{3}{7}$ seconds
Answer
Answer (as printed): B
Explanation
Let the length of each train be $x$ metres. Then, speed of first train $=\left(\frac{x}{3}\right) \mathrm{m} / \mathrm{sec}$. Speed of second
Explanation as extracted from the printed page; notation may be imperfect.