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#12540 Bangla Language & Literature চৌবাচ্চা ও নল Level 0

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. A 12 min
  2. B 15 min
  3. C 25 min
  4. D 50 min
Answer: A - 12 min

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