Solved UPSC CDS/OTA Question
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Q · Mixture and AlligationMedium · 45s
A mixture of 40 liters has 30% alcohol. How much alcohol should be added to make it 50% alcohol?
TopicMixture and Alligation
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.
Apply mixture and allegation concepts to solve the problem.
Final Answer: Option B — 10 liters