alleryTwo trains, 120 m and 80 m long, run in opposite directions at 36 km/h and 54 km/h. Time to cross each other is
A12 sec
B6 sec
C8 sec
D10 sec
Answer & Solution
Correct answer: C. 8 sec
Total length = 200 m.
Relative speed (opposite direction) = 36 + 54 = 90 km/h = 25 m/s. Time = 200/25 = 8 sec.
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