Solved UPSC CDS/OTA Question
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Q · Time and WorkMedium · 45s
The Bubna dam has four inlets. Through the first three inlets, the dam can be filled in 12 minutes, through the second, the third and the fourth inlets, it can be filled in 15 minutes; and through the first and the fourth inlet, in 20 minutes. How much time will it take all the four inlets to fill up the dam?
TopicTime and Work
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.25
Test Duration30 min
Step-by-Step Solution
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Final Answer: Option B — 10 min