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

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Q 1464401355.     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?
A

12 min

B

15 min

C

25 min

D

50 min

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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