A genius only solve this question.
Two trains 310 m and 405 m long are going in the same direction at 30 km/h and 48 km/h respectively.How long would it take the trains to pass each other?
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Answer:
2 min 23 seconds
Step-by-step explanation:
their relative speed
= 48 - 30 = 18 km/hr = 18 ×5/18 =5 m/s
total distance = 310 + 405 = 715m
time they will take to pass each other
= 715/5 = 143 seconds
= 2 minute 23 seconds
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