- A50 s
- B80 s
- C11.8 s
- D30 s
Step-by-Step Solution
Relative speed km/h m/s. Distance m. Time s. (11.8 s wrongly adds the speeds.)
Answer: B) 80 s
Trains 150 m and 250 m long run the same way on parallel lines at 70 km/h and 52 km/h. How long does the faster take to pass the slower?
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