Two trains 130 m and 190 m long run at the speed of 50 km/hr and 70 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is:
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Example
Relative Speed = 60+40 = 100 kmph
= 100*(5/18) = 250/9 m/sec
Distance = 140+160 = 300 meters
Time = Distance/Speed
\begin{aligned}
300*\frac{9}{250} = \frac{54}{5} \\
= 10.8 \text{ seconds}
\end{aligned}
So the time trains will take to cross each other will be 10.8 seconds
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Answer:
44 seconds
Step-by-step explanation:
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