Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
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Q · Time, Speed and DistanceMedium · 45s
A train passes two bridges of lengths 800m and 400 min in 100 seconds and 60 seconds. What is the length of the train?
TopicTime, Speed and Distance
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
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Final Answer: Option A — 400m