Two trains of lengths 200 m and 250 m respectively are running in opposite directions on parallel
their speeds be 45 km/h and 50 km/h respectively, in what time will they cross each other?
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Answer:
answer is 14 sec
Step-by-step explanation:
1) length of 1st train =200m
speed of 1st train =45km/h
= 45×5/18 = 12.5 m/s
2)length of 2nd train =250m
speed of 2nd train = 50km/h
= 14 m/s
therefore,
the total length =200+250=450m
the total speed = 12.5+14 = 26.5m/s
time = length/Speed
= 450/26.5
= 13.98 = 14
time is 14 sec
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