Mathematics · Speed Time Distance
A train 150 meters long crosses another train of length 100 meters running in the opposite direction in 12 seconds. If the speed of the first train is 60 km/h, estimate the speed of the second train.
- 112 km/h
- 215 km/h✓
- 318 km/h
- 420 km/h
Correct answer
15 km/h
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