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CDS 2025 · PYQ · Time, Speed and Distance · easy

Travelling at 3/5th of his usual speed, a man is late by 20 minutes. What is the usual time if he travels with his usual speed?

  1. A.25 minutes
  2. B.30 minutes✓ Correct
  3. C.32 minutes
  4. D.35 minutes

Explanation

If speed is 3/5 of usual, time becomes 5/3 of usual. Extra time = 5/3 T - T = 2/3 T = 20 minutes. So T = 30 minutes.
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