Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
Solve it the standard way once — then learn the shortcut.
Q · Time and WorkMedium · 45s
A and B completed work together in 5 days. Had A worked at twice the speed and B at half the speed, it would have taken then four days to complete the job(b) How much time would it take for A alone to do the work?
TopicTime and Work
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.25
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Final Answer: Option B — 20 days