Two trains with lengths 126 m and 119 m respectively are moving towards each other. Their speeds are 12 m/s and 23 m/s, respectively. What will be the time needed by the trains to cross each other?
Answer & explanation
Correct answer: option 4
Speed = \(\frac{Distance }{Time }\)
12 + 23 = \(\frac{\text{126 + 119}}{Time }\)
Time = \(\frac{\text{245}}{35 }\)
Time = 7 seconds