alleryThe same 180 m train at 54 km/h meets a jogger running toward it at 18 km/h. Time to pass him?
A12 seconds
B10 seconds
C8 seconds
D9 seconds
Answer & Solution
Correct answer: D. 9 seconds
Relative speed 72 km/h = 20 m/s, so 180 / 20 = 9 seconds.
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