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Reported Question / Answer
Q.) Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank?
1)
15 min
2)
12 min
3)
50 min
4)
25 min
5)
NULL
Answer :
2
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Human Verification : Answer 2 + 3 = ?
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