alleryA 180 m train at 54 km/h overtakes a jogger running at 18 km/h the same way. How long to pass the jogger?
A15 seconds
B18 seconds
C12 seconds
D20 seconds
Answer & Solution
Correct answer: B. 18 seconds
Relative speed 36 km/h = 10 m/s, and 180 / 10 = 18 seconds.
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