Multiple choice

Two trains start at same time from A and B towards each other with speeds 60 km./hr. and 80 km./hr. respectively. When they met each other it was observed that one of them had covered 400 km. more than the other. Find the distance between A and B.

  1. 2400 km.

  2. 1200 km.

  3. 2600 km.

  4. 2800 km.

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let t be meeting time. Relative speed = 60 + 80 = 140 km/h. Distance covered by faster train = 80t, slower train = 60t. Given: 80t - 60t = 400 km, so 20t = 400, t = 20 hours. Total distance = (60 + 80) × 20 = 140 × 20 = 2800 km. The trains meet after 20 hours, having covered distances proportional to their speeds.

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