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Raipur and Bilaspur are 120 km apart. At 8 a.m. trains leave both towards each other at 60 km/h and 40 km/h. How far apart are they at 10 a.m.?

Competition practiceProblems on Trains
  • A120 km
  • B80 km
  • C0 km
  • D40 km

Step-by-Step Solution

They meet at 9:12 a.m. and then move apart. By 10 a.m. they have run km together, which is 80 km beyond the 120 km gap → 80 km apart. (0 km assumes they are still level.)
Answer: B) 80 km

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