Learn and practice Aptitude questions and answers with explanation for interview, competitive exam (Pariksha Corner )

Friday, November 30, 2018

Two trains 105 m and 90 m long, run at the speeds of 45 km/h and 72 km/h respectively

Two trains 105 m and 90 m long, run at the speeds of 45 km/h and 72 km/h respectively, in opposite directions on parallel tracks. The time which they take to cross each other is
A8 sec.
B6 sec.
C7 sec.
D5 sec.

Answer is : B. 6 sec.

Explanation:

Length of the 1st train = 105 m;
Length of the 2nd train = 90 m.
Relative speed of the trains,
= 45+72 = 117kmph
=117×518=32.5m/sec
Time taken to cross each other,
= (Length of 1st train + length of 2nd train)relative speed of the trains.
Time taken = 19532.5 = 6 secs.

Nithin K
answered Apr 7 '2018 at 15:28

All Comments

Post your answers here:

Post

Related Posts:

Categories