A) 45 s
B) 50 s
C) 60 s
D) 65 s
Correct Answer: C
Solution :
Total distance =100 +150= 250m Since, the trains are running in the same direction. \[\therefore \]Relative speed of the faster train \[=(36-21)\]km/h = 15 km/h \[=\frac{15\times 5}{18}\]m/s\[=\frac{25}{6}\]m/s Time taken to cross each other. \[=\frac{250}{\frac{25}{6}}=\frac{250\times 6}{25}=60s\]You need to login to perform this action.
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