Speeds of train P and Q is 40 m/s and 30 m/s. Train P and Q are running in same direction. They cross each other in 60 seconds. What is total length (in metres) of trains P and Q?
Show answer & explanation
Correct answer: B
Explanation
Given:
Speed of P = 40 m/s
Speed of Q = 30 m/s
Time = 60 seconds
According to the formula:
Relative speed = 40 − 30
Relative speed = 10 m/s
Total length = Relative speed × Time = 10 × 60 = 600 meters