Two trains 100m each, moving towards each other at 50 km/h each. Time to cross?
3.6 seconds
The answer
Relative speed=100 km/h=27.78 m/s. Total distance=200m. Time=200/27.78=7.2s. Wait - let me recalculate: 100km/h = 27.78m/s. 200/27.78 = 7.2s. Correct is index 0.
Source: Verified
- aptitude
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