Question

Two trains of lengths 200 m and 250 m respectively are running in opposite directions on parallel tracks. If 119
their speeds be 45 km/h and 50 km/h respectively, in what time will they cross each other?
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Answer 1

Answer:

Length of 1st train=200m

Speed of 1st train=45 km/h =45×5/18=12.5 m/s

Length of 2nd train=250 m

Speed of 2nd train=50km/h=13.88 m/s=14 m/s

Both train have already met after certain time.

So, total Length=200+250=450 m

Total speed=12.5+14=26.5 m/s

Time=Distance or Length/speed

Time=450/26.5 seconds

Time = 16.98 seconds

Approx. = 17 seconds

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Answer 2

Step-by-step explanation:

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